4447 lines
148 KiB
JavaScript
4447 lines
148 KiB
JavaScript
/* global ResizeObserver */
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const etch = require('etch')
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const {Point, Range} = require('text-buffer')
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const LineTopIndex = require('line-top-index')
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const TextEditor = require('./text-editor')
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const {isPairedCharacter} = require('./text-utils')
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const clipboard = require('./safe-clipboard')
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const electron = require('electron')
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const $ = etch.dom
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let TextEditorElement
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const DEFAULT_ROWS_PER_TILE = 6
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const NORMAL_WIDTH_CHARACTER = 'x'
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const DOUBLE_WIDTH_CHARACTER = '我'
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const HALF_WIDTH_CHARACTER = 'ﾊ'
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const KOREAN_CHARACTER = '세'
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const NBSP_CHARACTER = '\u00a0'
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const ZERO_WIDTH_NBSP_CHARACTER = '\ufeff'
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const MOUSE_DRAG_AUTOSCROLL_MARGIN = 40
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const CURSOR_BLINK_RESUME_DELAY = 300
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const CURSOR_BLINK_PERIOD = 800
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function scaleMouseDragAutoscrollDelta (delta) {
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return Math.pow(delta / 3, 3) / 280
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}
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module.exports =
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class TextEditorComponent {
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static setScheduler (scheduler) {
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etch.setScheduler(scheduler)
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}
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static getScheduler () {
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return etch.getScheduler()
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}
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static didUpdateStyles () {
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if (this.attachedComponents) {
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this.attachedComponents.forEach((component) => {
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component.didUpdateStyles()
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})
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}
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}
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static didUpdateScrollbarStyles () {
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if (this.attachedComponents) {
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this.attachedComponents.forEach((component) => {
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component.didUpdateScrollbarStyles()
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})
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}
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}
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constructor (props) {
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this.props = props
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if (!props.model) {
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props.model = new TextEditor({mini: props.mini, readOnly: props.readOnly})
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}
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this.props.model.component = this
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if (props.element) {
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this.element = props.element
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} else {
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if (!TextEditorElement) TextEditorElement = require('./text-editor-element')
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this.element = new TextEditorElement()
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}
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this.element.initialize(this)
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this.virtualNode = $('atom-text-editor')
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this.virtualNode.domNode = this.element
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this.refs = {}
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this.updateSync = this.updateSync.bind(this)
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this.didBlurHiddenInput = this.didBlurHiddenInput.bind(this)
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this.didFocusHiddenInput = this.didFocusHiddenInput.bind(this)
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this.didPaste = this.didPaste.bind(this)
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this.didTextInput = this.didTextInput.bind(this)
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this.didKeydown = this.didKeydown.bind(this)
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this.didKeyup = this.didKeyup.bind(this)
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this.didKeypress = this.didKeypress.bind(this)
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this.didCompositionStart = this.didCompositionStart.bind(this)
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this.didCompositionUpdate = this.didCompositionUpdate.bind(this)
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this.didCompositionEnd = this.didCompositionEnd.bind(this)
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this.updatedSynchronously = this.props.updatedSynchronously
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this.didScrollDummyScrollbar = this.didScrollDummyScrollbar.bind(this)
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this.didMouseDownOnContent = this.didMouseDownOnContent.bind(this)
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this.debouncedResumeCursorBlinking = debounce(
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this.resumeCursorBlinking.bind(this),
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(this.props.cursorBlinkResumeDelay || CURSOR_BLINK_RESUME_DELAY)
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)
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this.lineTopIndex = new LineTopIndex()
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this.lineNodesPool = new NodePool()
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this.updateScheduled = false
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this.suppressUpdates = false
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this.hasInitialMeasurements = false
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this.measurements = {
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lineHeight: 0,
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baseCharacterWidth: 0,
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doubleWidthCharacterWidth: 0,
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halfWidthCharacterWidth: 0,
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koreanCharacterWidth: 0,
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gutterContainerWidth: 0,
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lineNumberGutterWidth: 0,
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clientContainerHeight: 0,
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clientContainerWidth: 0,
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verticalScrollbarWidth: 0,
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horizontalScrollbarHeight: 0,
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longestLineWidth: 0
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}
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this.derivedDimensionsCache = {}
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this.visible = false
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this.cursorsBlinking = false
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this.cursorsBlinkedOff = false
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this.nextUpdateOnlyBlinksCursors = null
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this.linesToMeasure = new Map()
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this.extraRenderedScreenLines = new Map()
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this.horizontalPositionsToMeasure = new Map() // Keys are rows with positions we want to measure, values are arrays of columns to measure
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this.horizontalPixelPositionsByScreenLineId = new Map() // Values are maps from column to horizontal pixel positions
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this.blockDecorationsToMeasure = new Set()
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this.blockDecorationsByElement = new WeakMap()
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this.blockDecorationSentinel = document.createElement('div')
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this.blockDecorationSentinel.style.height = '1px'
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this.heightsByBlockDecoration = new WeakMap()
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this.blockDecorationResizeObserver = new ResizeObserver(this.didResizeBlockDecorations.bind(this))
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this.lineComponentsByScreenLineId = new Map()
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this.overlayComponents = new Set()
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this.shouldRenderDummyScrollbars = true
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this.remeasureScrollbars = false
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this.pendingAutoscroll = null
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this.scrollTopPending = false
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this.scrollLeftPending = false
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this.scrollTop = 0
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this.scrollLeft = 0
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this.previousScrollWidth = 0
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this.previousScrollHeight = 0
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this.lastKeydown = null
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this.lastKeydownBeforeKeypress = null
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this.accentedCharacterMenuIsOpen = false
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this.remeasureGutterDimensions = false
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this.guttersToRender = [this.props.model.getLineNumberGutter()]
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this.guttersVisibility = [this.guttersToRender[0].visible]
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this.idsByTileStartRow = new Map()
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this.nextTileId = 0
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this.renderedTileStartRows = []
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this.showLineNumbers = this.props.model.doesShowLineNumbers()
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this.lineNumbersToRender = {
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maxDigits: 2,
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bufferRows: [],
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keys: [],
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softWrappedFlags: [],
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foldableFlags: []
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}
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this.decorationsToRender = {
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lineNumbers: null,
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lines: null,
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highlights: [],
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cursors: [],
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overlays: [],
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customGutter: new Map(),
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blocks: new Map(),
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text: []
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}
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this.decorationsToMeasure = {
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highlights: [],
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cursors: new Map()
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}
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this.textDecorationsByMarker = new Map()
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this.textDecorationBoundaries = []
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this.pendingScrollTopRow = this.props.initialScrollTopRow
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this.pendingScrollLeftColumn = this.props.initialScrollLeftColumn
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this.tabIndex = this.props.element && this.props.element.tabIndex ? this.props.element.tabIndex : -1
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this.measuredContent = false
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this.queryGuttersToRender()
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this.queryMaxLineNumberDigits()
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this.observeBlockDecorations()
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this.updateClassList()
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etch.updateSync(this)
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}
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update (props) {
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if (props.model !== this.props.model) {
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this.props.model.component = null
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props.model.component = this
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}
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this.props = props
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this.scheduleUpdate()
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}
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pixelPositionForScreenPosition ({row, column}) {
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const top = this.pixelPositionAfterBlocksForRow(row)
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let left = column === 0 ? 0 : this.pixelLeftForRowAndColumn(row, column)
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if (left == null) {
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this.requestHorizontalMeasurement(row, column)
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this.updateSync()
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left = this.pixelLeftForRowAndColumn(row, column)
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}
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return {top, left}
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}
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scheduleUpdate (nextUpdateOnlyBlinksCursors = false) {
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if (!this.visible) return
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if (this.suppressUpdates) return
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this.nextUpdateOnlyBlinksCursors =
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this.nextUpdateOnlyBlinksCursors !== false && nextUpdateOnlyBlinksCursors === true
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if (this.updatedSynchronously) {
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this.updateSync()
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} else if (!this.updateScheduled) {
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this.updateScheduled = true
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etch.getScheduler().updateDocument(() => {
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if (this.updateScheduled) this.updateSync(true)
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})
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}
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}
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updateSync (useScheduler = false) {
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// Don't proceed if we know we are not visible
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if (!this.visible) {
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this.updateScheduled = false
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return
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}
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// Don't proceed if we have to pay for a measurement anyway and detect
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// that we are no longer visible.
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if ((this.remeasureCharacterDimensions || this.remeasureAllBlockDecorations) && !this.isVisible()) {
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if (this.resolveNextUpdatePromise) this.resolveNextUpdatePromise()
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this.updateScheduled = false
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return
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}
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const onlyBlinkingCursors = this.nextUpdateOnlyBlinksCursors
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this.nextUpdateOnlyBlinksCursors = null
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if (useScheduler && onlyBlinkingCursors) {
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this.refs.cursorsAndInput.updateCursorBlinkSync(this.cursorsBlinkedOff)
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if (this.resolveNextUpdatePromise) this.resolveNextUpdatePromise()
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this.updateScheduled = false
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return
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}
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if (this.remeasureCharacterDimensions) {
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const originalLineHeight = this.getLineHeight()
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const originalBaseCharacterWidth = this.getBaseCharacterWidth()
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const scrollTopRow = this.getScrollTopRow()
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const scrollLeftColumn = this.getScrollLeftColumn()
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this.measureCharacterDimensions()
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this.measureGutterDimensions()
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this.queryLongestLine()
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if (this.getLineHeight() !== originalLineHeight) {
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this.setScrollTopRow(scrollTopRow)
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}
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if (this.getBaseCharacterWidth() !== originalBaseCharacterWidth) {
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this.setScrollLeftColumn(scrollLeftColumn)
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}
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this.remeasureCharacterDimensions = false
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}
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this.measureBlockDecorations()
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this.updateSyncBeforeMeasuringContent()
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if (useScheduler === true) {
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const scheduler = etch.getScheduler()
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scheduler.readDocument(() => {
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const restartFrame = this.measureContentDuringUpdateSync()
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scheduler.updateDocument(() => {
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if (restartFrame) {
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this.updateSync(true)
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} else {
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this.updateSyncAfterMeasuringContent()
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}
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})
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})
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} else {
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const restartFrame = this.measureContentDuringUpdateSync()
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if (restartFrame) {
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this.updateSync(false)
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} else {
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this.updateSyncAfterMeasuringContent()
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}
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}
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this.updateScheduled = false
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}
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measureBlockDecorations () {
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if (this.remeasureAllBlockDecorations) {
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this.remeasureAllBlockDecorations = false
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const decorations = this.props.model.getDecorations()
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for (var i = 0; i < decorations.length; i++) {
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const decoration = decorations[i]
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const marker = decoration.getMarker()
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if (marker.isValid() && decoration.getProperties().type === 'block') {
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this.blockDecorationsToMeasure.add(decoration)
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}
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}
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// Update the width of the line tiles to ensure block decorations are
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// measured with the most recent width.
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if (this.blockDecorationsToMeasure.size > 0) {
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this.updateSyncBeforeMeasuringContent()
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}
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}
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if (this.blockDecorationsToMeasure.size > 0) {
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const {blockDecorationMeasurementArea} = this.refs
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const sentinelElements = new Set()
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blockDecorationMeasurementArea.appendChild(document.createElement('div'))
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this.blockDecorationsToMeasure.forEach((decoration) => {
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const {item} = decoration.getProperties()
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const decorationElement = TextEditor.viewForItem(item)
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if (document.contains(decorationElement)) {
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const parentElement = decorationElement.parentElement
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if (!decorationElement.previousSibling) {
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const sentinelElement = this.blockDecorationSentinel.cloneNode()
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parentElement.insertBefore(sentinelElement, decorationElement)
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sentinelElements.add(sentinelElement)
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}
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if (!decorationElement.nextSibling) {
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const sentinelElement = this.blockDecorationSentinel.cloneNode()
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parentElement.appendChild(sentinelElement)
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sentinelElements.add(sentinelElement)
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}
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this.didMeasureVisibleBlockDecoration = true
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} else {
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blockDecorationMeasurementArea.appendChild(this.blockDecorationSentinel.cloneNode())
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blockDecorationMeasurementArea.appendChild(decorationElement)
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blockDecorationMeasurementArea.appendChild(this.blockDecorationSentinel.cloneNode())
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}
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})
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if (this.resizeBlockDecorationMeasurementsArea) {
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this.resizeBlockDecorationMeasurementsArea = false
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this.refs.blockDecorationMeasurementArea.style.width = this.getScrollWidth() + 'px'
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}
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this.blockDecorationsToMeasure.forEach((decoration) => {
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const {item} = decoration.getProperties()
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const decorationElement = TextEditor.viewForItem(item)
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const {previousSibling, nextSibling} = decorationElement
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const height = nextSibling.getBoundingClientRect().top - previousSibling.getBoundingClientRect().bottom
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this.heightsByBlockDecoration.set(decoration, height)
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this.lineTopIndex.resizeBlock(decoration, height)
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})
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sentinelElements.forEach((sentinelElement) => sentinelElement.remove())
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while (blockDecorationMeasurementArea.firstChild) {
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blockDecorationMeasurementArea.firstChild.remove()
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}
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this.blockDecorationsToMeasure.clear()
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}
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}
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updateSyncBeforeMeasuringContent () {
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this.measuredContent = false
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this.derivedDimensionsCache = {}
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this.updateModelSoftWrapColumn()
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if (this.pendingAutoscroll) {
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let {screenRange, options} = this.pendingAutoscroll
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this.autoscrollVertically(screenRange, options)
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this.requestHorizontalMeasurement(screenRange.start.row, screenRange.start.column)
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this.requestHorizontalMeasurement(screenRange.end.row, screenRange.end.column)
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}
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this.populateVisibleRowRange(this.getRenderedStartRow())
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this.populateVisibleTiles()
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this.queryScreenLinesToRender()
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this.queryLongestLine()
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this.queryLineNumbersToRender()
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this.queryGuttersToRender()
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this.queryDecorationsToRender()
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this.queryExtraScreenLinesToRender()
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this.shouldRenderDummyScrollbars = !this.remeasureScrollbars
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etch.updateSync(this)
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this.updateClassList()
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this.shouldRenderDummyScrollbars = true
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this.didMeasureVisibleBlockDecoration = false
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}
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measureContentDuringUpdateSync () {
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if (this.remeasureGutterDimensions) {
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this.measureGutterDimensions()
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this.remeasureGutterDimensions = false
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}
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const wasHorizontalScrollbarVisible = (
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this.canScrollHorizontally() &&
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this.getHorizontalScrollbarHeight() > 0
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)
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this.measureLongestLineWidth()
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this.measureHorizontalPositions()
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this.updateAbsolutePositionedDecorations()
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const isHorizontalScrollbarVisible = (
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this.canScrollHorizontally() &&
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this.getHorizontalScrollbarHeight() > 0
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)
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if (this.pendingAutoscroll) {
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this.derivedDimensionsCache = {}
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const {screenRange, options} = this.pendingAutoscroll
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this.autoscrollHorizontally(screenRange, options)
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if (!wasHorizontalScrollbarVisible && isHorizontalScrollbarVisible) {
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this.autoscrollVertically(screenRange, options)
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}
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this.pendingAutoscroll = null
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}
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this.linesToMeasure.clear()
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this.measuredContent = true
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return wasHorizontalScrollbarVisible !== isHorizontalScrollbarVisible
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}
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updateSyncAfterMeasuringContent () {
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this.derivedDimensionsCache = {}
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etch.updateSync(this)
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this.currentFrameLineNumberGutterProps = null
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this.scrollTopPending = false
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this.scrollLeftPending = false
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if (this.remeasureScrollbars) {
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// Flush stored scroll positions to the vertical and the horizontal
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// scrollbars. This is because they have just been destroyed and recreated
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// as a result of their remeasurement, but we could not assign the scroll
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// top while they were initialized because they were not attached to the
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// DOM yet.
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this.refs.verticalScrollbar.flushScrollPosition()
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this.refs.horizontalScrollbar.flushScrollPosition()
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this.measureScrollbarDimensions()
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this.remeasureScrollbars = false
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etch.updateSync(this)
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}
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this.derivedDimensionsCache = {}
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if (this.resolveNextUpdatePromise) this.resolveNextUpdatePromise()
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}
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render () {
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const {model} = this.props
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const style = {}
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if (!model.getAutoHeight() && !model.getAutoWidth()) {
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style.contain = 'size'
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}
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let clientContainerHeight = '100%'
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let clientContainerWidth = '100%'
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if (this.hasInitialMeasurements) {
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if (model.getAutoHeight()) {
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clientContainerHeight = this.getContentHeight()
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if (this.canScrollHorizontally()) clientContainerHeight += this.getHorizontalScrollbarHeight()
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clientContainerHeight += 'px'
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}
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if (model.getAutoWidth()) {
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style.width = 'min-content'
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clientContainerWidth = this.getGutterContainerWidth() + this.getContentWidth()
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if (this.canScrollVertically()) clientContainerWidth += this.getVerticalScrollbarWidth()
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clientContainerWidth += 'px'
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} else {
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style.width = this.element.style.width
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}
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}
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let attributes = {}
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if (model.isMini()) {
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attributes.mini = ''
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}
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if (!this.isInputEnabled()) {
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attributes.readonly = ''
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}
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const dataset = {encoding: model.getEncoding()}
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const grammar = model.getGrammar()
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if (grammar && grammar.scopeName) {
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dataset.grammar = grammar.scopeName.replace(/\./g, ' ')
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}
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return $('atom-text-editor',
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{
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// See this.updateClassList() for construction of the class name
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style,
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attributes,
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dataset,
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tabIndex: -1,
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on: {mousewheel: this.didMouseWheel}
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},
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$.div(
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{
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ref: 'clientContainer',
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style: {
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position: 'relative',
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contain: 'strict',
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overflow: 'hidden',
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backgroundColor: 'inherit',
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height: clientContainerHeight,
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width: clientContainerWidth
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}
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},
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this.renderGutterContainer(),
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this.renderScrollContainer()
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),
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this.renderOverlayDecorations()
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)
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}
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renderGutterContainer () {
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if (this.props.model.isMini()) {
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return null
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} else {
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return $(GutterContainerComponent, {
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ref: 'gutterContainer',
|
|
key: 'gutterContainer',
|
|
rootComponent: this,
|
|
hasInitialMeasurements: this.hasInitialMeasurements,
|
|
measuredContent: this.measuredContent,
|
|
scrollTop: this.getScrollTop(),
|
|
scrollHeight: this.getScrollHeight(),
|
|
lineNumberGutterWidth: this.getLineNumberGutterWidth(),
|
|
lineHeight: this.getLineHeight(),
|
|
renderedStartRow: this.getRenderedStartRow(),
|
|
renderedEndRow: this.getRenderedEndRow(),
|
|
rowsPerTile: this.getRowsPerTile(),
|
|
guttersToRender: this.guttersToRender,
|
|
decorationsToRender: this.decorationsToRender,
|
|
isLineNumberGutterVisible: this.props.model.isLineNumberGutterVisible(),
|
|
showLineNumbers: this.showLineNumbers,
|
|
lineNumbersToRender: this.lineNumbersToRender,
|
|
didMeasureVisibleBlockDecoration: this.didMeasureVisibleBlockDecoration
|
|
})
|
|
}
|
|
}
|
|
|
|
renderScrollContainer () {
|
|
const style = {
|
|
position: 'absolute',
|
|
contain: 'strict',
|
|
overflow: 'hidden',
|
|
top: 0,
|
|
bottom: 0,
|
|
backgroundColor: 'inherit'
|
|
}
|
|
|
|
if (this.hasInitialMeasurements) {
|
|
style.left = this.getGutterContainerWidth() + 'px'
|
|
style.width = this.getScrollContainerWidth() + 'px'
|
|
}
|
|
|
|
return $.div(
|
|
{
|
|
ref: 'scrollContainer',
|
|
key: 'scrollContainer',
|
|
className: 'scroll-view',
|
|
style
|
|
},
|
|
this.renderContent(),
|
|
this.renderDummyScrollbars()
|
|
)
|
|
}
|
|
|
|
renderContent () {
|
|
let style = {
|
|
contain: 'strict',
|
|
overflow: 'hidden',
|
|
backgroundColor: 'inherit'
|
|
}
|
|
if (this.hasInitialMeasurements) {
|
|
style.width = ceilToPhysicalPixelBoundary(this.getScrollWidth()) + 'px'
|
|
style.height = ceilToPhysicalPixelBoundary(this.getScrollHeight()) + 'px'
|
|
style.willChange = 'transform'
|
|
style.transform = `translate(${-roundToPhysicalPixelBoundary(this.getScrollLeft())}px, ${-roundToPhysicalPixelBoundary(this.getScrollTop())}px)`
|
|
}
|
|
|
|
return $.div(
|
|
{
|
|
ref: 'content',
|
|
on: {mousedown: this.didMouseDownOnContent},
|
|
style
|
|
},
|
|
this.renderLineTiles(),
|
|
this.renderBlockDecorationMeasurementArea(),
|
|
this.renderCharacterMeasurementLine()
|
|
)
|
|
}
|
|
|
|
renderHighlightDecorations () {
|
|
return $(HighlightsComponent, {
|
|
hasInitialMeasurements: this.hasInitialMeasurements,
|
|
highlightDecorations: this.decorationsToRender.highlights.slice(),
|
|
width: this.getScrollWidth(),
|
|
height: this.getScrollHeight(),
|
|
lineHeight: this.getLineHeight()
|
|
})
|
|
}
|
|
|
|
renderLineTiles () {
|
|
const style = {
|
|
position: 'absolute',
|
|
contain: 'strict',
|
|
overflow: 'hidden'
|
|
}
|
|
|
|
const children = []
|
|
children.push(this.renderHighlightDecorations())
|
|
|
|
if (this.hasInitialMeasurements) {
|
|
const {lineComponentsByScreenLineId} = this
|
|
|
|
const startRow = this.getRenderedStartRow()
|
|
const endRow = this.getRenderedEndRow()
|
|
const rowsPerTile = this.getRowsPerTile()
|
|
const tileWidth = this.getScrollWidth()
|
|
|
|
for (let i = 0; i < this.renderedTileStartRows.length; i++) {
|
|
const tileStartRow = this.renderedTileStartRows[i]
|
|
const tileEndRow = Math.min(endRow, tileStartRow + rowsPerTile)
|
|
const tileHeight = this.pixelPositionBeforeBlocksForRow(tileEndRow) - this.pixelPositionBeforeBlocksForRow(tileStartRow)
|
|
|
|
children.push($(LinesTileComponent, {
|
|
key: this.idsByTileStartRow.get(tileStartRow),
|
|
measuredContent: this.measuredContent,
|
|
height: tileHeight,
|
|
width: tileWidth,
|
|
top: this.pixelPositionBeforeBlocksForRow(tileStartRow),
|
|
lineHeight: this.getLineHeight(),
|
|
renderedStartRow: startRow,
|
|
tileStartRow,
|
|
tileEndRow,
|
|
screenLines: this.renderedScreenLines.slice(tileStartRow - startRow, tileEndRow - startRow),
|
|
lineDecorations: this.decorationsToRender.lines.slice(tileStartRow - startRow, tileEndRow - startRow),
|
|
textDecorations: this.decorationsToRender.text.slice(tileStartRow - startRow, tileEndRow - startRow),
|
|
blockDecorations: this.decorationsToRender.blocks.get(tileStartRow),
|
|
displayLayer: this.props.model.displayLayer,
|
|
nodePool: this.lineNodesPool,
|
|
lineComponentsByScreenLineId
|
|
}))
|
|
}
|
|
|
|
this.extraRenderedScreenLines.forEach((screenLine, screenRow) => {
|
|
if (screenRow < startRow || screenRow >= endRow) {
|
|
children.push($(LineComponent, {
|
|
key: 'extra-' + screenLine.id,
|
|
offScreen: true,
|
|
screenLine,
|
|
screenRow,
|
|
displayLayer: this.props.model.displayLayer,
|
|
nodePool: this.lineNodesPool,
|
|
lineComponentsByScreenLineId
|
|
}))
|
|
}
|
|
})
|
|
|
|
style.width = this.getScrollWidth() + 'px'
|
|
style.height = this.getScrollHeight() + 'px'
|
|
}
|
|
|
|
children.push(this.renderPlaceholderText())
|
|
children.push(this.renderCursorsAndInput())
|
|
|
|
return $.div(
|
|
{key: 'lineTiles', ref: 'lineTiles', className: 'lines', style},
|
|
children
|
|
)
|
|
}
|
|
|
|
renderCursorsAndInput () {
|
|
return $(CursorsAndInputComponent, {
|
|
ref: 'cursorsAndInput',
|
|
key: 'cursorsAndInput',
|
|
didBlurHiddenInput: this.didBlurHiddenInput,
|
|
didFocusHiddenInput: this.didFocusHiddenInput,
|
|
didTextInput: this.didTextInput,
|
|
didPaste: this.didPaste,
|
|
didKeydown: this.didKeydown,
|
|
didKeyup: this.didKeyup,
|
|
didKeypress: this.didKeypress,
|
|
didCompositionStart: this.didCompositionStart,
|
|
didCompositionUpdate: this.didCompositionUpdate,
|
|
didCompositionEnd: this.didCompositionEnd,
|
|
measuredContent: this.measuredContent,
|
|
lineHeight: this.getLineHeight(),
|
|
scrollHeight: this.getScrollHeight(),
|
|
scrollWidth: this.getScrollWidth(),
|
|
decorationsToRender: this.decorationsToRender,
|
|
cursorsBlinkedOff: this.cursorsBlinkedOff,
|
|
hiddenInputPosition: this.hiddenInputPosition,
|
|
tabIndex: this.tabIndex
|
|
})
|
|
}
|
|
|
|
renderPlaceholderText () {
|
|
const {model} = this.props
|
|
if (model.isEmpty()) {
|
|
const placeholderText = model.getPlaceholderText()
|
|
if (placeholderText != null) {
|
|
return $.div({className: 'placeholder-text'}, placeholderText)
|
|
}
|
|
}
|
|
return null
|
|
}
|
|
|
|
renderCharacterMeasurementLine () {
|
|
return $.div(
|
|
{
|
|
key: 'characterMeasurementLine',
|
|
ref: 'characterMeasurementLine',
|
|
className: 'line dummy',
|
|
style: {position: 'absolute', visibility: 'hidden'}
|
|
},
|
|
$.span({ref: 'normalWidthCharacterSpan'}, NORMAL_WIDTH_CHARACTER),
|
|
$.span({ref: 'doubleWidthCharacterSpan'}, DOUBLE_WIDTH_CHARACTER),
|
|
$.span({ref: 'halfWidthCharacterSpan'}, HALF_WIDTH_CHARACTER),
|
|
$.span({ref: 'koreanCharacterSpan'}, KOREAN_CHARACTER)
|
|
)
|
|
}
|
|
|
|
renderBlockDecorationMeasurementArea () {
|
|
return $.div({
|
|
ref: 'blockDecorationMeasurementArea',
|
|
key: 'blockDecorationMeasurementArea',
|
|
style: {
|
|
contain: 'strict',
|
|
position: 'absolute',
|
|
visibility: 'hidden',
|
|
width: this.getScrollWidth() + 'px'
|
|
}
|
|
})
|
|
}
|
|
|
|
renderDummyScrollbars () {
|
|
if (this.shouldRenderDummyScrollbars && !this.props.model.isMini()) {
|
|
let scrollHeight, scrollTop, horizontalScrollbarHeight
|
|
let scrollWidth, scrollLeft, verticalScrollbarWidth, forceScrollbarVisible
|
|
let canScrollHorizontally, canScrollVertically
|
|
|
|
if (this.hasInitialMeasurements) {
|
|
scrollHeight = this.getScrollHeight()
|
|
scrollWidth = this.getScrollWidth()
|
|
scrollTop = this.getScrollTop()
|
|
scrollLeft = this.getScrollLeft()
|
|
canScrollHorizontally = this.canScrollHorizontally()
|
|
canScrollVertically = this.canScrollVertically()
|
|
horizontalScrollbarHeight =
|
|
canScrollHorizontally
|
|
? this.getHorizontalScrollbarHeight()
|
|
: 0
|
|
verticalScrollbarWidth =
|
|
canScrollVertically
|
|
? this.getVerticalScrollbarWidth()
|
|
: 0
|
|
forceScrollbarVisible = this.remeasureScrollbars
|
|
} else {
|
|
forceScrollbarVisible = true
|
|
}
|
|
|
|
const dummyScrollbarVnodes = [
|
|
$(DummyScrollbarComponent, {
|
|
ref: 'verticalScrollbar',
|
|
orientation: 'vertical',
|
|
didScroll: this.didScrollDummyScrollbar,
|
|
didMouseDown: this.didMouseDownOnContent,
|
|
canScroll: canScrollVertically,
|
|
scrollHeight,
|
|
scrollTop,
|
|
horizontalScrollbarHeight,
|
|
forceScrollbarVisible
|
|
}),
|
|
$(DummyScrollbarComponent, {
|
|
ref: 'horizontalScrollbar',
|
|
orientation: 'horizontal',
|
|
didScroll: this.didScrollDummyScrollbar,
|
|
didMouseDown: this.didMouseDownOnContent,
|
|
canScroll: canScrollHorizontally,
|
|
scrollWidth,
|
|
scrollLeft,
|
|
verticalScrollbarWidth,
|
|
forceScrollbarVisible
|
|
})
|
|
]
|
|
|
|
// If both scrollbars are visible, push a dummy element to force a "corner"
|
|
// to render where the two scrollbars meet at the lower right
|
|
if (verticalScrollbarWidth > 0 && horizontalScrollbarHeight > 0) {
|
|
dummyScrollbarVnodes.push($.div(
|
|
{
|
|
ref: 'scrollbarCorner',
|
|
className: 'scrollbar-corner',
|
|
style: {
|
|
position: 'absolute',
|
|
height: '20px',
|
|
width: '20px',
|
|
bottom: 0,
|
|
right: 0,
|
|
overflow: 'scroll'
|
|
}
|
|
}
|
|
))
|
|
}
|
|
|
|
return dummyScrollbarVnodes
|
|
} else {
|
|
return null
|
|
}
|
|
}
|
|
|
|
renderOverlayDecorations () {
|
|
return this.decorationsToRender.overlays.map((overlayProps) =>
|
|
$(OverlayComponent, Object.assign(
|
|
{
|
|
key: overlayProps.element,
|
|
overlayComponents: this.overlayComponents,
|
|
didResize: (overlayComponent) => {
|
|
this.updateOverlayToRender(overlayProps)
|
|
overlayComponent.update(overlayProps)
|
|
}
|
|
},
|
|
overlayProps
|
|
))
|
|
)
|
|
}
|
|
|
|
// Imperatively manipulate the class list of the root element to avoid
|
|
// clearing classes assigned by package authors.
|
|
updateClassList () {
|
|
const {model} = this.props
|
|
|
|
const oldClassList = this.classList
|
|
const newClassList = ['editor']
|
|
if (this.focused) newClassList.push('is-focused')
|
|
if (model.isMini()) newClassList.push('mini')
|
|
for (var i = 0; i < model.selections.length; i++) {
|
|
if (!model.selections[i].isEmpty()) {
|
|
newClassList.push('has-selection')
|
|
break
|
|
}
|
|
}
|
|
|
|
if (oldClassList) {
|
|
for (let i = 0; i < oldClassList.length; i++) {
|
|
const className = oldClassList[i]
|
|
if (!newClassList.includes(className)) {
|
|
this.element.classList.remove(className)
|
|
}
|
|
}
|
|
}
|
|
|
|
for (let i = 0; i < newClassList.length; i++) {
|
|
const className = newClassList[i]
|
|
if (!oldClassList || !oldClassList.includes(className)) {
|
|
this.element.classList.add(className)
|
|
}
|
|
}
|
|
|
|
this.classList = newClassList
|
|
}
|
|
|
|
queryScreenLinesToRender () {
|
|
const {model} = this.props
|
|
|
|
this.renderedScreenLines = model.displayLayer.getScreenLines(
|
|
this.getRenderedStartRow(),
|
|
this.getRenderedEndRow()
|
|
)
|
|
}
|
|
|
|
queryLongestLine () {
|
|
const {model} = this.props
|
|
|
|
const longestLineRow = model.getApproximateLongestScreenRow()
|
|
const longestLine = model.screenLineForScreenRow(longestLineRow)
|
|
if (longestLine !== this.previousLongestLine || this.remeasureCharacterDimensions) {
|
|
this.requestLineToMeasure(longestLineRow, longestLine)
|
|
this.longestLineToMeasure = longestLine
|
|
this.previousLongestLine = longestLine
|
|
}
|
|
}
|
|
|
|
queryExtraScreenLinesToRender () {
|
|
this.extraRenderedScreenLines.clear()
|
|
this.linesToMeasure.forEach((screenLine, row) => {
|
|
if (row < this.getRenderedStartRow() || row >= this.getRenderedEndRow()) {
|
|
this.extraRenderedScreenLines.set(row, screenLine)
|
|
}
|
|
})
|
|
}
|
|
|
|
queryLineNumbersToRender () {
|
|
const {model} = this.props
|
|
if (!model.isLineNumberGutterVisible()) return
|
|
if (this.showLineNumbers !== model.doesShowLineNumbers()) {
|
|
this.remeasureGutterDimensions = true
|
|
this.showLineNumbers = model.doesShowLineNumbers()
|
|
}
|
|
|
|
this.queryMaxLineNumberDigits()
|
|
|
|
const startRow = this.getRenderedStartRow()
|
|
const endRow = this.getRenderedEndRow()
|
|
const renderedRowCount = this.getRenderedRowCount()
|
|
|
|
const bufferRows = model.bufferRowsForScreenRows(startRow, endRow)
|
|
const screenRows = new Array(renderedRowCount)
|
|
const keys = new Array(renderedRowCount)
|
|
const foldableFlags = new Array(renderedRowCount)
|
|
const softWrappedFlags = new Array(renderedRowCount)
|
|
|
|
let previousBufferRow = (startRow > 0) ? model.bufferRowForScreenRow(startRow - 1) : -1
|
|
let softWrapCount = 0
|
|
for (let row = startRow; row < endRow; row++) {
|
|
const i = row - startRow
|
|
const bufferRow = bufferRows[i]
|
|
if (bufferRow === previousBufferRow) {
|
|
softWrapCount++
|
|
softWrappedFlags[i] = true
|
|
keys[i] = bufferRow + '-' + softWrapCount
|
|
} else {
|
|
softWrapCount = 0
|
|
softWrappedFlags[i] = false
|
|
keys[i] = bufferRow
|
|
}
|
|
|
|
const nextBufferRow = bufferRows[i + 1]
|
|
if (bufferRow !== nextBufferRow) {
|
|
foldableFlags[i] = model.isFoldableAtBufferRow(bufferRow)
|
|
} else {
|
|
foldableFlags[i] = false
|
|
}
|
|
|
|
screenRows[i] = row
|
|
previousBufferRow = bufferRow
|
|
}
|
|
|
|
// Delete extra buffer row at the end because it's not currently on screen.
|
|
bufferRows.pop()
|
|
|
|
this.lineNumbersToRender.bufferRows = bufferRows
|
|
this.lineNumbersToRender.screenRows = screenRows
|
|
this.lineNumbersToRender.keys = keys
|
|
this.lineNumbersToRender.foldableFlags = foldableFlags
|
|
this.lineNumbersToRender.softWrappedFlags = softWrappedFlags
|
|
}
|
|
|
|
queryMaxLineNumberDigits () {
|
|
const {model} = this.props
|
|
if (model.isLineNumberGutterVisible()) {
|
|
const maxDigits = Math.max(2, model.getLineCount().toString().length)
|
|
if (maxDigits !== this.lineNumbersToRender.maxDigits) {
|
|
this.remeasureGutterDimensions = true
|
|
this.lineNumbersToRender.maxDigits = maxDigits
|
|
}
|
|
}
|
|
}
|
|
|
|
renderedScreenLineForRow (row) {
|
|
return (
|
|
this.renderedScreenLines[row - this.getRenderedStartRow()] ||
|
|
this.extraRenderedScreenLines.get(row)
|
|
)
|
|
}
|
|
|
|
queryGuttersToRender () {
|
|
const oldGuttersToRender = this.guttersToRender
|
|
const oldGuttersVisibility = this.guttersVisibility
|
|
this.guttersToRender = this.props.model.getGutters()
|
|
this.guttersVisibility = this.guttersToRender.map(g => g.visible)
|
|
|
|
if (!oldGuttersToRender || oldGuttersToRender.length !== this.guttersToRender.length) {
|
|
this.remeasureGutterDimensions = true
|
|
} else {
|
|
for (let i = 0, length = this.guttersToRender.length; i < length; i++) {
|
|
if (this.guttersToRender[i] !== oldGuttersToRender[i] || this.guttersVisibility[i] !== oldGuttersVisibility[i]) {
|
|
this.remeasureGutterDimensions = true
|
|
break
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
queryDecorationsToRender () {
|
|
this.decorationsToRender.lineNumbers = []
|
|
this.decorationsToRender.lines = []
|
|
this.decorationsToRender.overlays.length = 0
|
|
this.decorationsToRender.customGutter.clear()
|
|
this.decorationsToRender.blocks = new Map()
|
|
this.decorationsToRender.text = []
|
|
this.decorationsToMeasure.highlights.length = 0
|
|
this.decorationsToMeasure.cursors.clear()
|
|
this.textDecorationsByMarker.clear()
|
|
this.textDecorationBoundaries.length = 0
|
|
|
|
const decorationsByMarker =
|
|
this.props.model.decorationManager.decorationPropertiesByMarkerForScreenRowRange(
|
|
this.getRenderedStartRow(),
|
|
this.getRenderedEndRow()
|
|
)
|
|
|
|
decorationsByMarker.forEach((decorations, marker) => {
|
|
const screenRange = marker.getScreenRange()
|
|
const reversed = marker.isReversed()
|
|
for (let i = 0; i < decorations.length; i++) {
|
|
const decoration = decorations[i]
|
|
this.addDecorationToRender(decoration.type, decoration, marker, screenRange, reversed)
|
|
}
|
|
})
|
|
|
|
this.populateTextDecorationsToRender()
|
|
}
|
|
|
|
addDecorationToRender (type, decoration, marker, screenRange, reversed) {
|
|
if (Array.isArray(type)) {
|
|
for (let i = 0, length = type.length; i < length; i++) {
|
|
this.addDecorationToRender(type[i], decoration, marker, screenRange, reversed)
|
|
}
|
|
} else {
|
|
switch (type) {
|
|
case 'line':
|
|
case 'line-number':
|
|
this.addLineDecorationToRender(type, decoration, screenRange, reversed)
|
|
break
|
|
case 'highlight':
|
|
this.addHighlightDecorationToMeasure(decoration, screenRange, marker.id)
|
|
break
|
|
case 'cursor':
|
|
this.addCursorDecorationToMeasure(decoration, marker, screenRange, reversed)
|
|
break
|
|
case 'overlay':
|
|
this.addOverlayDecorationToRender(decoration, marker)
|
|
break
|
|
case 'gutter':
|
|
this.addCustomGutterDecorationToRender(decoration, screenRange)
|
|
break
|
|
case 'block':
|
|
this.addBlockDecorationToRender(decoration, screenRange, reversed)
|
|
break
|
|
case 'text':
|
|
this.addTextDecorationToRender(decoration, screenRange, marker)
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
addLineDecorationToRender (type, decoration, screenRange, reversed) {
|
|
const decorationsToRender = (type === 'line') ? this.decorationsToRender.lines : this.decorationsToRender.lineNumbers
|
|
|
|
let omitLastRow = false
|
|
if (screenRange.isEmpty()) {
|
|
if (decoration.onlyNonEmpty) return
|
|
} else {
|
|
if (decoration.onlyEmpty) return
|
|
if (decoration.omitEmptyLastRow !== false) {
|
|
omitLastRow = screenRange.end.column === 0
|
|
}
|
|
}
|
|
|
|
const renderedStartRow = this.getRenderedStartRow()
|
|
let rangeStartRow = screenRange.start.row
|
|
let rangeEndRow = screenRange.end.row
|
|
|
|
if (decoration.onlyHead) {
|
|
if (reversed) {
|
|
rangeEndRow = rangeStartRow
|
|
} else {
|
|
rangeStartRow = rangeEndRow
|
|
}
|
|
}
|
|
|
|
rangeStartRow = Math.max(rangeStartRow, this.getRenderedStartRow())
|
|
rangeEndRow = Math.min(rangeEndRow, this.getRenderedEndRow() - 1)
|
|
|
|
for (let row = rangeStartRow; row <= rangeEndRow; row++) {
|
|
if (omitLastRow && row === screenRange.end.row) break
|
|
const currentClassName = decorationsToRender[row - renderedStartRow]
|
|
const newClassName = currentClassName ? currentClassName + ' ' + decoration.class : decoration.class
|
|
decorationsToRender[row - renderedStartRow] = newClassName
|
|
}
|
|
}
|
|
|
|
addHighlightDecorationToMeasure (decoration, screenRange, key) {
|
|
screenRange = constrainRangeToRows(screenRange, this.getRenderedStartRow(), this.getRenderedEndRow())
|
|
if (screenRange.isEmpty()) return
|
|
|
|
const {class: className, flashRequested, flashClass, flashDuration} = decoration
|
|
decoration.flashRequested = false
|
|
this.decorationsToMeasure.highlights.push({
|
|
screenRange,
|
|
key,
|
|
className,
|
|
flashRequested,
|
|
flashClass,
|
|
flashDuration
|
|
})
|
|
this.requestHorizontalMeasurement(screenRange.start.row, screenRange.start.column)
|
|
this.requestHorizontalMeasurement(screenRange.end.row, screenRange.end.column)
|
|
}
|
|
|
|
addCursorDecorationToMeasure (decoration, marker, screenRange, reversed) {
|
|
const {model} = this.props
|
|
if (!model.getShowCursorOnSelection() && !screenRange.isEmpty()) return
|
|
|
|
let decorationToMeasure = this.decorationsToMeasure.cursors.get(marker)
|
|
if (!decorationToMeasure) {
|
|
const isLastCursor = model.getLastCursor().getMarker() === marker
|
|
const screenPosition = reversed ? screenRange.start : screenRange.end
|
|
const {row, column} = screenPosition
|
|
|
|
if (row < this.getRenderedStartRow() || row >= this.getRenderedEndRow()) return
|
|
|
|
this.requestHorizontalMeasurement(row, column)
|
|
let columnWidth = 0
|
|
if (model.lineLengthForScreenRow(row) > column) {
|
|
columnWidth = 1
|
|
this.requestHorizontalMeasurement(row, column + 1)
|
|
}
|
|
decorationToMeasure = {screenPosition, columnWidth, isLastCursor}
|
|
this.decorationsToMeasure.cursors.set(marker, decorationToMeasure)
|
|
}
|
|
|
|
if (decoration.class) {
|
|
if (decorationToMeasure.className) {
|
|
decorationToMeasure.className += ' ' + decoration.class
|
|
} else {
|
|
decorationToMeasure.className = decoration.class
|
|
}
|
|
}
|
|
|
|
if (decoration.style) {
|
|
if (decorationToMeasure.style) {
|
|
Object.assign(decorationToMeasure.style, decoration.style)
|
|
} else {
|
|
decorationToMeasure.style = Object.assign({}, decoration.style)
|
|
}
|
|
}
|
|
}
|
|
|
|
addOverlayDecorationToRender (decoration, marker) {
|
|
const {class: className, item, position, avoidOverflow} = decoration
|
|
const element = TextEditor.viewForItem(item)
|
|
const screenPosition = (position === 'tail')
|
|
? marker.getTailScreenPosition()
|
|
: marker.getHeadScreenPosition()
|
|
|
|
this.requestHorizontalMeasurement(screenPosition.row, screenPosition.column)
|
|
this.decorationsToRender.overlays.push({className, element, avoidOverflow, screenPosition})
|
|
}
|
|
|
|
addCustomGutterDecorationToRender (decoration, screenRange) {
|
|
let decorations = this.decorationsToRender.customGutter.get(decoration.gutterName)
|
|
if (!decorations) {
|
|
decorations = []
|
|
this.decorationsToRender.customGutter.set(decoration.gutterName, decorations)
|
|
}
|
|
const top = this.pixelPositionAfterBlocksForRow(screenRange.start.row)
|
|
const height = this.pixelPositionBeforeBlocksForRow(screenRange.end.row + 1) - top
|
|
|
|
decorations.push({
|
|
className: 'decoration' + (decoration.class ? ' ' + decoration.class : ''),
|
|
element: TextEditor.viewForItem(decoration.item),
|
|
top,
|
|
height
|
|
})
|
|
}
|
|
|
|
addBlockDecorationToRender (decoration, screenRange, reversed) {
|
|
const {row} = reversed ? screenRange.start : screenRange.end
|
|
if (row < this.getRenderedStartRow() || row >= this.getRenderedEndRow()) return
|
|
|
|
const tileStartRow = this.tileStartRowForRow(row)
|
|
const screenLine = this.renderedScreenLines[row - this.getRenderedStartRow()]
|
|
|
|
let decorationsByScreenLine = this.decorationsToRender.blocks.get(tileStartRow)
|
|
if (!decorationsByScreenLine) {
|
|
decorationsByScreenLine = new Map()
|
|
this.decorationsToRender.blocks.set(tileStartRow, decorationsByScreenLine)
|
|
}
|
|
|
|
let decorations = decorationsByScreenLine.get(screenLine.id)
|
|
if (!decorations) {
|
|
decorations = []
|
|
decorationsByScreenLine.set(screenLine.id, decorations)
|
|
}
|
|
decorations.push(decoration)
|
|
}
|
|
|
|
addTextDecorationToRender (decoration, screenRange, marker) {
|
|
if (screenRange.isEmpty()) return
|
|
|
|
let decorationsForMarker = this.textDecorationsByMarker.get(marker)
|
|
if (!decorationsForMarker) {
|
|
decorationsForMarker = []
|
|
this.textDecorationsByMarker.set(marker, decorationsForMarker)
|
|
this.textDecorationBoundaries.push({position: screenRange.start, starting: [marker]})
|
|
this.textDecorationBoundaries.push({position: screenRange.end, ending: [marker]})
|
|
}
|
|
decorationsForMarker.push(decoration)
|
|
}
|
|
|
|
populateTextDecorationsToRender () {
|
|
// Sort all boundaries in ascending order of position
|
|
this.textDecorationBoundaries.sort((a, b) => a.position.compare(b.position))
|
|
|
|
// Combine adjacent boundaries with the same position
|
|
for (let i = 0; i < this.textDecorationBoundaries.length;) {
|
|
const boundary = this.textDecorationBoundaries[i]
|
|
const nextBoundary = this.textDecorationBoundaries[i + 1]
|
|
if (nextBoundary && nextBoundary.position.isEqual(boundary.position)) {
|
|
if (nextBoundary.starting) {
|
|
if (boundary.starting) {
|
|
boundary.starting.push(...nextBoundary.starting)
|
|
} else {
|
|
boundary.starting = nextBoundary.starting
|
|
}
|
|
}
|
|
|
|
if (nextBoundary.ending) {
|
|
if (boundary.ending) {
|
|
boundary.ending.push(...nextBoundary.ending)
|
|
} else {
|
|
boundary.ending = nextBoundary.ending
|
|
}
|
|
}
|
|
|
|
this.textDecorationBoundaries.splice(i + 1, 1)
|
|
} else {
|
|
i++
|
|
}
|
|
}
|
|
|
|
const renderedStartRow = this.getRenderedStartRow()
|
|
const renderedEndRow = this.getRenderedEndRow()
|
|
const containingMarkers = []
|
|
|
|
// Iterate over boundaries to build up text decorations.
|
|
for (let i = 0; i < this.textDecorationBoundaries.length; i++) {
|
|
const boundary = this.textDecorationBoundaries[i]
|
|
|
|
// If multiple markers start here, sort them by order of nesting (markers ending later come first)
|
|
if (boundary.starting && boundary.starting.length > 1) {
|
|
boundary.starting.sort((a, b) => a.compare(b))
|
|
}
|
|
|
|
// If multiple markers start here, sort them by order of nesting (markers starting earlier come first)
|
|
if (boundary.ending && boundary.ending.length > 1) {
|
|
boundary.ending.sort((a, b) => b.compare(a))
|
|
}
|
|
|
|
// Remove markers ending here from containing markers array
|
|
if (boundary.ending) {
|
|
for (let j = boundary.ending.length - 1; j >= 0; j--) {
|
|
containingMarkers.splice(containingMarkers.lastIndexOf(boundary.ending[j]), 1)
|
|
}
|
|
}
|
|
// Add markers starting here to containing markers array
|
|
if (boundary.starting) containingMarkers.push(...boundary.starting)
|
|
|
|
// Determine desired className and style based on containing markers
|
|
let className, style
|
|
for (let j = 0; j < containingMarkers.length; j++) {
|
|
const marker = containingMarkers[j]
|
|
const decorations = this.textDecorationsByMarker.get(marker)
|
|
for (let k = 0; k < decorations.length; k++) {
|
|
const decoration = decorations[k]
|
|
if (decoration.class) {
|
|
if (className) {
|
|
className += ' ' + decoration.class
|
|
} else {
|
|
className = decoration.class
|
|
}
|
|
}
|
|
if (decoration.style) {
|
|
if (style) {
|
|
Object.assign(style, decoration.style)
|
|
} else {
|
|
style = Object.assign({}, decoration.style)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Add decoration start with className/style for current position's column,
|
|
// and also for the start of every row up until the next decoration boundary
|
|
if (boundary.position.row >= renderedStartRow) {
|
|
this.addTextDecorationStart(boundary.position.row, boundary.position.column, className, style)
|
|
}
|
|
const nextBoundary = this.textDecorationBoundaries[i + 1]
|
|
if (nextBoundary) {
|
|
let row = Math.max(boundary.position.row + 1, renderedStartRow)
|
|
const endRow = Math.min(nextBoundary.position.row, renderedEndRow)
|
|
for (; row < endRow; row++) {
|
|
this.addTextDecorationStart(row, 0, className, style)
|
|
}
|
|
|
|
if (row === nextBoundary.position.row && nextBoundary.position.column !== 0) {
|
|
this.addTextDecorationStart(row, 0, className, style)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
addTextDecorationStart (row, column, className, style) {
|
|
const renderedStartRow = this.getRenderedStartRow()
|
|
let decorationStarts = this.decorationsToRender.text[row - renderedStartRow]
|
|
if (!decorationStarts) {
|
|
decorationStarts = []
|
|
this.decorationsToRender.text[row - renderedStartRow] = decorationStarts
|
|
}
|
|
decorationStarts.push({column, className, style})
|
|
}
|
|
|
|
updateAbsolutePositionedDecorations () {
|
|
this.updateHighlightsToRender()
|
|
this.updateCursorsToRender()
|
|
this.updateOverlaysToRender()
|
|
}
|
|
|
|
updateHighlightsToRender () {
|
|
this.decorationsToRender.highlights.length = 0
|
|
for (let i = 0; i < this.decorationsToMeasure.highlights.length; i++) {
|
|
const highlight = this.decorationsToMeasure.highlights[i]
|
|
const {start, end} = highlight.screenRange
|
|
highlight.startPixelTop = this.pixelPositionAfterBlocksForRow(start.row)
|
|
highlight.startPixelLeft = this.pixelLeftForRowAndColumn(start.row, start.column)
|
|
highlight.endPixelTop = this.pixelPositionAfterBlocksForRow(end.row) + this.getLineHeight()
|
|
highlight.endPixelLeft = this.pixelLeftForRowAndColumn(end.row, end.column)
|
|
this.decorationsToRender.highlights.push(highlight)
|
|
}
|
|
}
|
|
|
|
updateCursorsToRender () {
|
|
this.decorationsToRender.cursors.length = 0
|
|
|
|
this.decorationsToMeasure.cursors.forEach((cursor) => {
|
|
const {screenPosition, className, style} = cursor
|
|
const {row, column} = screenPosition
|
|
|
|
const pixelTop = this.pixelPositionAfterBlocksForRow(row)
|
|
const pixelLeft = this.pixelLeftForRowAndColumn(row, column)
|
|
let pixelWidth
|
|
if (cursor.columnWidth === 0) {
|
|
pixelWidth = this.getBaseCharacterWidth()
|
|
} else {
|
|
pixelWidth = this.pixelLeftForRowAndColumn(row, column + 1) - pixelLeft
|
|
}
|
|
|
|
const cursorPosition = {pixelTop, pixelLeft, pixelWidth, className, style}
|
|
this.decorationsToRender.cursors.push(cursorPosition)
|
|
if (cursor.isLastCursor) this.hiddenInputPosition = cursorPosition
|
|
})
|
|
}
|
|
|
|
updateOverlayToRender (decoration) {
|
|
const windowInnerHeight = this.getWindowInnerHeight()
|
|
const windowInnerWidth = this.getWindowInnerWidth()
|
|
const contentClientRect = this.refs.content.getBoundingClientRect()
|
|
|
|
const {element, screenPosition, avoidOverflow} = decoration
|
|
const {row, column} = screenPosition
|
|
let wrapperTop = contentClientRect.top + this.pixelPositionAfterBlocksForRow(row) + this.getLineHeight()
|
|
let wrapperLeft = contentClientRect.left + this.pixelLeftForRowAndColumn(row, column)
|
|
const clientRect = element.getBoundingClientRect()
|
|
|
|
if (avoidOverflow !== false) {
|
|
const computedStyle = window.getComputedStyle(element)
|
|
const elementTop = wrapperTop + parseInt(computedStyle.marginTop)
|
|
const elementBottom = elementTop + clientRect.height
|
|
const flippedElementTop = wrapperTop - this.getLineHeight() - clientRect.height - parseInt(computedStyle.marginBottom)
|
|
const elementLeft = wrapperLeft + parseInt(computedStyle.marginLeft)
|
|
const elementRight = elementLeft + clientRect.width
|
|
|
|
if (elementBottom > windowInnerHeight && flippedElementTop >= 0) {
|
|
wrapperTop -= (elementTop - flippedElementTop)
|
|
}
|
|
if (elementLeft < 0) {
|
|
wrapperLeft -= elementLeft
|
|
} else if (elementRight > windowInnerWidth) {
|
|
wrapperLeft -= (elementRight - windowInnerWidth)
|
|
}
|
|
}
|
|
|
|
decoration.pixelTop = Math.round(wrapperTop)
|
|
decoration.pixelLeft = Math.round(wrapperLeft)
|
|
}
|
|
|
|
updateOverlaysToRender () {
|
|
const overlayCount = this.decorationsToRender.overlays.length
|
|
if (overlayCount === 0) return null
|
|
|
|
for (let i = 0; i < overlayCount; i++) {
|
|
const decoration = this.decorationsToRender.overlays[i]
|
|
this.updateOverlayToRender(decoration)
|
|
}
|
|
}
|
|
|
|
didAttach () {
|
|
if (!this.attached) {
|
|
this.attached = true
|
|
this.intersectionObserver = new IntersectionObserver((entries) => {
|
|
const {intersectionRect} = entries[entries.length - 1]
|
|
if (intersectionRect.width > 0 || intersectionRect.height > 0) {
|
|
this.didShow()
|
|
} else {
|
|
this.didHide()
|
|
}
|
|
})
|
|
this.intersectionObserver.observe(this.element)
|
|
|
|
this.resizeObserver = new ResizeObserver(this.didResize.bind(this))
|
|
this.resizeObserver.observe(this.element)
|
|
|
|
if (this.refs.gutterContainer) {
|
|
this.gutterContainerResizeObserver = new ResizeObserver(this.didResizeGutterContainer.bind(this))
|
|
this.gutterContainerResizeObserver.observe(this.refs.gutterContainer.element)
|
|
}
|
|
|
|
this.overlayComponents.forEach((component) => component.didAttach())
|
|
|
|
if (this.isVisible()) {
|
|
this.didShow()
|
|
|
|
if (this.refs.verticalScrollbar) this.refs.verticalScrollbar.flushScrollPosition()
|
|
if (this.refs.horizontalScrollbar) this.refs.horizontalScrollbar.flushScrollPosition()
|
|
} else {
|
|
this.didHide()
|
|
}
|
|
if (!this.constructor.attachedComponents) {
|
|
this.constructor.attachedComponents = new Set()
|
|
}
|
|
this.constructor.attachedComponents.add(this)
|
|
}
|
|
}
|
|
|
|
didDetach () {
|
|
if (this.attached) {
|
|
this.intersectionObserver.disconnect()
|
|
this.resizeObserver.disconnect()
|
|
if (this.gutterContainerResizeObserver) this.gutterContainerResizeObserver.disconnect()
|
|
this.overlayComponents.forEach((component) => component.didDetach())
|
|
|
|
this.didHide()
|
|
this.attached = false
|
|
this.constructor.attachedComponents.delete(this)
|
|
}
|
|
}
|
|
|
|
didShow () {
|
|
if (!this.visible && this.isVisible()) {
|
|
if (!this.hasInitialMeasurements) this.measureDimensions()
|
|
this.visible = true
|
|
this.props.model.setVisible(true)
|
|
this.resizeBlockDecorationMeasurementsArea = true
|
|
this.updateSync()
|
|
this.flushPendingLogicalScrollPosition()
|
|
}
|
|
}
|
|
|
|
didHide () {
|
|
if (this.visible) {
|
|
this.visible = false
|
|
this.props.model.setVisible(false)
|
|
}
|
|
}
|
|
|
|
// Called by TextEditorElement so that focus events can be handled before
|
|
// the element is attached to the DOM.
|
|
didFocus () {
|
|
// This element can be focused from a parent custom element's
|
|
// attachedCallback before *its* attachedCallback is fired. This protects
|
|
// against that case.
|
|
if (!this.attached) this.didAttach()
|
|
|
|
// The element can be focused before the intersection observer detects that
|
|
// it has been shown for the first time. If this element is being focused,
|
|
// it is necessarily visible, so we call `didShow` to ensure the hidden
|
|
// input is rendered before we try to shift focus to it.
|
|
if (!this.visible) this.didShow()
|
|
|
|
if (!this.focused) {
|
|
this.focused = true
|
|
this.startCursorBlinking()
|
|
this.scheduleUpdate()
|
|
}
|
|
|
|
this.getHiddenInput().focus()
|
|
}
|
|
|
|
// Called by TextEditorElement so that this function is always the first
|
|
// listener to be fired, even if other listeners are bound before creating
|
|
// the component.
|
|
didBlur (event) {
|
|
if (event.relatedTarget === this.getHiddenInput()) {
|
|
event.stopImmediatePropagation()
|
|
}
|
|
}
|
|
|
|
didBlurHiddenInput (event) {
|
|
if (this.element !== event.relatedTarget && !this.element.contains(event.relatedTarget)) {
|
|
this.focused = false
|
|
this.stopCursorBlinking()
|
|
this.scheduleUpdate()
|
|
this.element.dispatchEvent(new FocusEvent(event.type, event))
|
|
}
|
|
}
|
|
|
|
didFocusHiddenInput () {
|
|
// Focusing the hidden input when it is off-screen causes the browser to
|
|
// scroll it into view. Since we use synthetic scrolling this behavior
|
|
// causes all the lines to disappear so we counteract it by always setting
|
|
// the scroll position to 0.
|
|
this.refs.scrollContainer.scrollTop = 0
|
|
this.refs.scrollContainer.scrollLeft = 0
|
|
if (!this.focused) {
|
|
this.focused = true
|
|
this.startCursorBlinking()
|
|
this.scheduleUpdate()
|
|
}
|
|
}
|
|
|
|
didMouseWheel (event) {
|
|
const scrollSensitivity = this.props.model.getScrollSensitivity() / 100
|
|
|
|
let {wheelDeltaX, wheelDeltaY} = event
|
|
|
|
if (Math.abs(wheelDeltaX) > Math.abs(wheelDeltaY)) {
|
|
wheelDeltaX = wheelDeltaX * scrollSensitivity
|
|
wheelDeltaY = 0
|
|
} else {
|
|
wheelDeltaX = 0
|
|
wheelDeltaY = wheelDeltaY * scrollSensitivity
|
|
}
|
|
|
|
if (this.getPlatform() !== 'darwin' && event.shiftKey) {
|
|
let temp = wheelDeltaX
|
|
wheelDeltaX = wheelDeltaY
|
|
wheelDeltaY = temp
|
|
}
|
|
|
|
const scrollLeftChanged = wheelDeltaX !== 0 && this.setScrollLeft(this.getScrollLeft() - wheelDeltaX)
|
|
const scrollTopChanged = wheelDeltaY !== 0 && this.setScrollTop(this.getScrollTop() - wheelDeltaY)
|
|
|
|
if (scrollLeftChanged || scrollTopChanged) this.updateSync()
|
|
}
|
|
|
|
didResize () {
|
|
// Prevent the component from measuring the client container dimensions when
|
|
// getting spurious resize events.
|
|
if (this.isVisible()) {
|
|
const clientContainerWidthChanged = this.measureClientContainerWidth()
|
|
const clientContainerHeightChanged = this.measureClientContainerHeight()
|
|
if (clientContainerWidthChanged || clientContainerHeightChanged) {
|
|
if (clientContainerWidthChanged) {
|
|
this.remeasureAllBlockDecorations = true
|
|
}
|
|
|
|
this.resizeObserver.disconnect()
|
|
this.scheduleUpdate()
|
|
process.nextTick(() => { this.resizeObserver.observe(this.element) })
|
|
}
|
|
}
|
|
}
|
|
|
|
didResizeGutterContainer () {
|
|
// Prevent the component from measuring the gutter dimensions when getting
|
|
// spurious resize events.
|
|
if (this.isVisible() && this.measureGutterDimensions()) {
|
|
this.gutterContainerResizeObserver.disconnect()
|
|
this.scheduleUpdate()
|
|
process.nextTick(() => { this.gutterContainerResizeObserver.observe(this.refs.gutterContainer.element) })
|
|
}
|
|
}
|
|
|
|
didScrollDummyScrollbar () {
|
|
let scrollTopChanged = false
|
|
let scrollLeftChanged = false
|
|
if (!this.scrollTopPending) {
|
|
scrollTopChanged = this.setScrollTop(this.refs.verticalScrollbar.element.scrollTop)
|
|
}
|
|
if (!this.scrollLeftPending) {
|
|
scrollLeftChanged = this.setScrollLeft(this.refs.horizontalScrollbar.element.scrollLeft)
|
|
}
|
|
if (scrollTopChanged || scrollLeftChanged) this.updateSync()
|
|
}
|
|
|
|
didUpdateStyles () {
|
|
this.remeasureCharacterDimensions = true
|
|
this.horizontalPixelPositionsByScreenLineId.clear()
|
|
this.scheduleUpdate()
|
|
}
|
|
|
|
didUpdateScrollbarStyles () {
|
|
if (!this.props.model.isMini()) {
|
|
this.remeasureScrollbars = true
|
|
this.scheduleUpdate()
|
|
}
|
|
}
|
|
|
|
didPaste (event) {
|
|
// On Linux, Chromium translates a middle-button mouse click into a
|
|
// mousedown event *and* a paste event. Since Atom supports the middle mouse
|
|
// click as a way of closing a tab, we only want the mousedown event, not
|
|
// the paste event. And since we don't use the `paste` event for any
|
|
// behavior in Atom, we can no-op the event to eliminate this issue.
|
|
// See https://github.com/atom/atom/pull/15183#issue-248432413.
|
|
if (this.getPlatform() === 'linux') event.preventDefault()
|
|
}
|
|
|
|
didTextInput (event) {
|
|
if (this.compositionCheckpoint) {
|
|
this.props.model.revertToCheckpoint(this.compositionCheckpoint)
|
|
this.compositionCheckpoint = null
|
|
}
|
|
|
|
if (this.isInputEnabled()) {
|
|
event.stopPropagation()
|
|
|
|
// WARNING: If we call preventDefault on the input of a space
|
|
// character, then the browser interprets the spacebar keypress as a
|
|
// page-down command, causing spaces to scroll elements containing
|
|
// editors. This means typing space will actually change the contents
|
|
// of the hidden input, which will cause the browser to autoscroll the
|
|
// scroll container to reveal the input if it is off screen (See
|
|
// https://github.com/atom/atom/issues/16046). To correct for this
|
|
// situation, we automatically reset the scroll position to 0,0 after
|
|
// typing a space. None of this can really be tested.
|
|
if (event.data === ' ') {
|
|
window.setImmediate(() => {
|
|
this.refs.scrollContainer.scrollTop = 0
|
|
this.refs.scrollContainer.scrollLeft = 0
|
|
})
|
|
} else {
|
|
event.preventDefault()
|
|
}
|
|
|
|
// If the input event is fired while the accented character menu is open it
|
|
// means that the user has chosen one of the accented alternatives. Thus, we
|
|
// will replace the original non accented character with the selected
|
|
// alternative.
|
|
if (this.accentedCharacterMenuIsOpen) {
|
|
this.props.model.selectLeft()
|
|
}
|
|
|
|
this.props.model.insertText(event.data, {groupUndo: true})
|
|
}
|
|
}
|
|
|
|
// We need to get clever to detect when the accented character menu is
|
|
// opened on macOS. Usually, every keydown event that could cause input is
|
|
// followed by a corresponding keypress. However, pressing and holding
|
|
// long enough to open the accented character menu causes additional keydown
|
|
// events to fire that aren't followed by their own keypress and textInput
|
|
// events.
|
|
//
|
|
// Therefore, we assume the accented character menu has been deployed if,
|
|
// before observing any keyup event, we observe events in the following
|
|
// sequence:
|
|
//
|
|
// keydown(code: X), keypress, keydown(code: X)
|
|
//
|
|
// The code X must be the same in the keydown events that bracket the
|
|
// keypress, meaning we're *holding* the _same_ key we intially pressed.
|
|
// Got that?
|
|
didKeydown (event) {
|
|
// Stop dragging when user interacts with the keyboard. This prevents
|
|
// unwanted selections in the case edits are performed while selecting text
|
|
// at the same time. Modifier keys are exempt to preserve the ability to
|
|
// add selections, shift-scroll horizontally while selecting.
|
|
if (this.stopDragging && event.key !== 'Control' && event.key !== 'Alt' && event.key !== 'Meta' && event.key !== 'Shift') {
|
|
this.stopDragging()
|
|
}
|
|
|
|
if (this.lastKeydownBeforeKeypress != null) {
|
|
if (this.lastKeydownBeforeKeypress.code === event.code) {
|
|
this.accentedCharacterMenuIsOpen = true
|
|
}
|
|
|
|
this.lastKeydownBeforeKeypress = null
|
|
}
|
|
|
|
this.lastKeydown = event
|
|
}
|
|
|
|
didKeypress (event) {
|
|
this.lastKeydownBeforeKeypress = this.lastKeydown
|
|
|
|
// This cancels the accented character behavior if we type a key normally
|
|
// with the menu open.
|
|
this.accentedCharacterMenuIsOpen = false
|
|
}
|
|
|
|
didKeyup (event) {
|
|
if (this.lastKeydownBeforeKeypress && this.lastKeydownBeforeKeypress.code === event.code) {
|
|
this.lastKeydownBeforeKeypress = null
|
|
}
|
|
}
|
|
|
|
// The IME composition events work like this:
|
|
//
|
|
// User types 's', chromium pops up the completion helper
|
|
// 1. compositionstart fired
|
|
// 2. compositionupdate fired; event.data == 's'
|
|
// User hits arrow keys to move around in completion helper
|
|
// 3. compositionupdate fired; event.data == 's' for each arry key press
|
|
// User escape to cancel OR User chooses a completion
|
|
// 4. compositionend fired
|
|
// 5. textInput fired; event.data == the completion string
|
|
didCompositionStart () {
|
|
// Workaround for Chromium not preventing composition events when
|
|
// preventDefault is called on the keydown event that precipitated them.
|
|
if (this.lastKeydown && this.lastKeydown.defaultPrevented) {
|
|
this.getHiddenInput().disabled = true
|
|
process.nextTick(() => {
|
|
// Disabling the hidden input makes it lose focus as well, so we have to
|
|
// re-enable and re-focus it.
|
|
this.getHiddenInput().disabled = false
|
|
this.getHiddenInput().focus()
|
|
})
|
|
return
|
|
}
|
|
|
|
this.compositionCheckpoint = this.props.model.createCheckpoint()
|
|
if (this.accentedCharacterMenuIsOpen) {
|
|
this.props.model.selectLeft()
|
|
}
|
|
}
|
|
|
|
didCompositionUpdate (event) {
|
|
this.props.model.insertText(event.data, {select: true})
|
|
}
|
|
|
|
didCompositionEnd (event) {
|
|
event.target.value = ''
|
|
}
|
|
|
|
didMouseDownOnContent (event) {
|
|
const {model} = this.props
|
|
const {target, button, detail, ctrlKey, shiftKey, metaKey} = event
|
|
const platform = this.getPlatform()
|
|
|
|
// Ignore clicks on block decorations.
|
|
if (target) {
|
|
let element = target
|
|
while (element && element !== this.element) {
|
|
if (this.blockDecorationsByElement.has(element)) {
|
|
return
|
|
}
|
|
|
|
element = element.parentElement
|
|
}
|
|
}
|
|
|
|
const screenPosition = this.screenPositionForMouseEvent(event)
|
|
|
|
if (button === 1) {
|
|
model.setCursorScreenPosition(screenPosition, {autoscroll: false})
|
|
|
|
// On Linux, pasting happens on middle click. A textInput event with the
|
|
// contents of the selection clipboard will be dispatched by the browser
|
|
// automatically on mouseup.
|
|
if (platform === 'linux' && this.isInputEnabled()) model.insertText(clipboard.readText('selection'))
|
|
return
|
|
}
|
|
|
|
if (button !== 0) return
|
|
|
|
// Ctrl-click brings up the context menu on macOS
|
|
if (platform === 'darwin' && ctrlKey) return
|
|
|
|
if (target && target.matches('.fold-marker')) {
|
|
const bufferPosition = model.bufferPositionForScreenPosition(screenPosition)
|
|
model.destroyFoldsContainingBufferPositions([bufferPosition], false)
|
|
return
|
|
}
|
|
|
|
const addOrRemoveSelection = metaKey || (ctrlKey && platform !== 'darwin')
|
|
|
|
switch (detail) {
|
|
case 1:
|
|
if (addOrRemoveSelection) {
|
|
const existingSelection = model.getSelectionAtScreenPosition(screenPosition)
|
|
if (existingSelection) {
|
|
if (model.hasMultipleCursors()) existingSelection.destroy()
|
|
} else {
|
|
model.addCursorAtScreenPosition(screenPosition, {autoscroll: false})
|
|
}
|
|
} else {
|
|
if (shiftKey) {
|
|
model.selectToScreenPosition(screenPosition, {autoscroll: false})
|
|
} else {
|
|
model.setCursorScreenPosition(screenPosition, {autoscroll: false})
|
|
}
|
|
}
|
|
break
|
|
case 2:
|
|
if (addOrRemoveSelection) model.addCursorAtScreenPosition(screenPosition, {autoscroll: false})
|
|
model.getLastSelection().selectWord({autoscroll: false})
|
|
break
|
|
case 3:
|
|
if (addOrRemoveSelection) model.addCursorAtScreenPosition(screenPosition, {autoscroll: false})
|
|
model.getLastSelection().selectLine(null, {autoscroll: false})
|
|
break
|
|
}
|
|
|
|
this.handleMouseDragUntilMouseUp({
|
|
didDrag: (event) => {
|
|
this.autoscrollOnMouseDrag(event)
|
|
const screenPosition = this.screenPositionForMouseEvent(event)
|
|
model.selectToScreenPosition(screenPosition, {suppressSelectionMerge: true, autoscroll: false})
|
|
this.updateSync()
|
|
},
|
|
didStopDragging: () => {
|
|
model.finalizeSelections()
|
|
model.mergeIntersectingSelections()
|
|
this.updateSync()
|
|
}
|
|
})
|
|
}
|
|
|
|
didMouseDownOnLineNumberGutter (event) {
|
|
const {model} = this.props
|
|
const {target, button, ctrlKey, shiftKey, metaKey} = event
|
|
|
|
// Only handle mousedown events for left mouse button
|
|
if (button !== 0) return
|
|
|
|
const clickedScreenRow = this.screenPositionForMouseEvent(event).row
|
|
const startBufferRow = model.bufferPositionForScreenPosition([clickedScreenRow, 0]).row
|
|
|
|
if (target && (target.matches('.foldable .icon-right') || target.matches('.folded .icon-right'))) {
|
|
model.toggleFoldAtBufferRow(startBufferRow)
|
|
return
|
|
}
|
|
|
|
const addOrRemoveSelection = metaKey || (ctrlKey && this.getPlatform() !== 'darwin')
|
|
const endBufferRow = model.bufferPositionForScreenPosition([clickedScreenRow, Infinity]).row
|
|
const clickedLineBufferRange = Range(Point(startBufferRow, 0), Point(endBufferRow + 1, 0))
|
|
|
|
let initialBufferRange
|
|
if (shiftKey) {
|
|
const lastSelection = model.getLastSelection()
|
|
initialBufferRange = lastSelection.getBufferRange()
|
|
lastSelection.setBufferRange(initialBufferRange.union(clickedLineBufferRange), {
|
|
reversed: clickedScreenRow < lastSelection.getScreenRange().start.row,
|
|
autoscroll: false,
|
|
preserveFolds: true,
|
|
suppressSelectionMerge: true
|
|
})
|
|
} else {
|
|
initialBufferRange = clickedLineBufferRange
|
|
if (addOrRemoveSelection) {
|
|
model.addSelectionForBufferRange(clickedLineBufferRange, {autoscroll: false, preserveFolds: true})
|
|
} else {
|
|
model.setSelectedBufferRange(clickedLineBufferRange, {autoscroll: false, preserveFolds: true})
|
|
}
|
|
}
|
|
|
|
const initialScreenRange = model.screenRangeForBufferRange(initialBufferRange)
|
|
this.handleMouseDragUntilMouseUp({
|
|
didDrag: (event) => {
|
|
this.autoscrollOnMouseDrag(event, true)
|
|
const dragRow = this.screenPositionForMouseEvent(event).row
|
|
const draggedLineScreenRange = Range(Point(dragRow, 0), Point(dragRow + 1, 0))
|
|
model.getLastSelection().setScreenRange(draggedLineScreenRange.union(initialScreenRange), {
|
|
reversed: dragRow < initialScreenRange.start.row,
|
|
autoscroll: false,
|
|
preserveFolds: true
|
|
})
|
|
this.updateSync()
|
|
},
|
|
didStopDragging: () => {
|
|
model.mergeIntersectingSelections()
|
|
this.updateSync()
|
|
}
|
|
})
|
|
}
|
|
|
|
handleMouseDragUntilMouseUp ({didDrag, didStopDragging}) {
|
|
let dragging = false
|
|
let lastMousemoveEvent
|
|
|
|
const animationFrameLoop = () => {
|
|
window.requestAnimationFrame(() => {
|
|
if (dragging && this.visible) {
|
|
didDrag(lastMousemoveEvent)
|
|
animationFrameLoop()
|
|
}
|
|
})
|
|
}
|
|
|
|
function didMouseMove (event) {
|
|
lastMousemoveEvent = event
|
|
if (!dragging) {
|
|
dragging = true
|
|
animationFrameLoop()
|
|
}
|
|
}
|
|
|
|
function didMouseUp () {
|
|
this.stopDragging = null
|
|
window.removeEventListener('mousemove', didMouseMove)
|
|
window.removeEventListener('mouseup', didMouseUp, {capture: true})
|
|
if (dragging) {
|
|
dragging = false
|
|
didStopDragging()
|
|
}
|
|
}
|
|
|
|
window.addEventListener('mousemove', didMouseMove)
|
|
window.addEventListener('mouseup', didMouseUp, {capture: true})
|
|
this.stopDragging = didMouseUp
|
|
}
|
|
|
|
autoscrollOnMouseDrag ({clientX, clientY}, verticalOnly = false) {
|
|
var {top, bottom, left, right} = this.refs.scrollContainer.getBoundingClientRect() // Using var to avoid deopt on += assignments below
|
|
top += MOUSE_DRAG_AUTOSCROLL_MARGIN
|
|
bottom -= MOUSE_DRAG_AUTOSCROLL_MARGIN
|
|
left += MOUSE_DRAG_AUTOSCROLL_MARGIN
|
|
right -= MOUSE_DRAG_AUTOSCROLL_MARGIN
|
|
|
|
let yDelta, yDirection
|
|
if (clientY < top) {
|
|
yDelta = top - clientY
|
|
yDirection = -1
|
|
} else if (clientY > bottom) {
|
|
yDelta = clientY - bottom
|
|
yDirection = 1
|
|
}
|
|
|
|
let xDelta, xDirection
|
|
if (clientX < left) {
|
|
xDelta = left - clientX
|
|
xDirection = -1
|
|
} else if (clientX > right) {
|
|
xDelta = clientX - right
|
|
xDirection = 1
|
|
}
|
|
|
|
let scrolled = false
|
|
if (yDelta != null) {
|
|
const scaledDelta = scaleMouseDragAutoscrollDelta(yDelta) * yDirection
|
|
scrolled = this.setScrollTop(this.getScrollTop() + scaledDelta)
|
|
}
|
|
|
|
if (!verticalOnly && xDelta != null) {
|
|
const scaledDelta = scaleMouseDragAutoscrollDelta(xDelta) * xDirection
|
|
scrolled = this.setScrollLeft(this.getScrollLeft() + scaledDelta)
|
|
}
|
|
|
|
if (scrolled) this.updateSync()
|
|
}
|
|
|
|
screenPositionForMouseEvent (event) {
|
|
return this.screenPositionForPixelPosition(this.pixelPositionForMouseEvent(event))
|
|
}
|
|
|
|
pixelPositionForMouseEvent ({clientX, clientY}) {
|
|
const scrollContainerRect = this.refs.scrollContainer.getBoundingClientRect()
|
|
clientX = Math.min(scrollContainerRect.right, Math.max(scrollContainerRect.left, clientX))
|
|
clientY = Math.min(scrollContainerRect.bottom, Math.max(scrollContainerRect.top, clientY))
|
|
const linesRect = this.refs.lineTiles.getBoundingClientRect()
|
|
return {
|
|
top: clientY - linesRect.top,
|
|
left: clientX - linesRect.left
|
|
}
|
|
}
|
|
|
|
didUpdateSelections () {
|
|
this.pauseCursorBlinking()
|
|
this.scheduleUpdate()
|
|
}
|
|
|
|
pauseCursorBlinking () {
|
|
this.stopCursorBlinking()
|
|
this.debouncedResumeCursorBlinking()
|
|
}
|
|
|
|
resumeCursorBlinking () {
|
|
this.cursorsBlinkedOff = true
|
|
this.startCursorBlinking()
|
|
}
|
|
|
|
stopCursorBlinking () {
|
|
if (this.cursorsBlinking) {
|
|
this.cursorsBlinkedOff = false
|
|
this.cursorsBlinking = false
|
|
window.clearInterval(this.cursorBlinkIntervalHandle)
|
|
this.cursorBlinkIntervalHandle = null
|
|
this.scheduleUpdate()
|
|
}
|
|
}
|
|
|
|
startCursorBlinking () {
|
|
if (!this.cursorsBlinking) {
|
|
this.cursorBlinkIntervalHandle = window.setInterval(() => {
|
|
this.cursorsBlinkedOff = !this.cursorsBlinkedOff
|
|
this.scheduleUpdate(true)
|
|
}, (this.props.cursorBlinkPeriod || CURSOR_BLINK_PERIOD) / 2)
|
|
this.cursorsBlinking = true
|
|
this.scheduleUpdate(true)
|
|
}
|
|
}
|
|
|
|
didRequestAutoscroll (autoscroll) {
|
|
this.pendingAutoscroll = autoscroll
|
|
this.scheduleUpdate()
|
|
}
|
|
|
|
flushPendingLogicalScrollPosition () {
|
|
let changedScrollTop = false
|
|
if (this.pendingScrollTopRow > 0) {
|
|
changedScrollTop = this.setScrollTopRow(this.pendingScrollTopRow, false)
|
|
this.pendingScrollTopRow = null
|
|
}
|
|
|
|
let changedScrollLeft = false
|
|
if (this.pendingScrollLeftColumn > 0) {
|
|
changedScrollLeft = this.setScrollLeftColumn(this.pendingScrollLeftColumn, false)
|
|
this.pendingScrollLeftColumn = null
|
|
}
|
|
|
|
if (changedScrollTop || changedScrollLeft) {
|
|
this.updateSync()
|
|
}
|
|
}
|
|
|
|
autoscrollVertically (screenRange, options) {
|
|
const screenRangeTop = this.pixelPositionAfterBlocksForRow(screenRange.start.row)
|
|
const screenRangeBottom = this.pixelPositionAfterBlocksForRow(screenRange.end.row) + this.getLineHeight()
|
|
const verticalScrollMargin = this.getVerticalAutoscrollMargin()
|
|
|
|
let desiredScrollTop, desiredScrollBottom
|
|
if (options && options.center) {
|
|
const desiredScrollCenter = (screenRangeTop + screenRangeBottom) / 2
|
|
if (desiredScrollCenter < this.getScrollTop() || desiredScrollCenter > this.getScrollBottom()) {
|
|
desiredScrollTop = desiredScrollCenter - this.getScrollContainerClientHeight() / 2
|
|
desiredScrollBottom = desiredScrollCenter + this.getScrollContainerClientHeight() / 2
|
|
}
|
|
} else {
|
|
desiredScrollTop = screenRangeTop - verticalScrollMargin
|
|
desiredScrollBottom = screenRangeBottom + verticalScrollMargin
|
|
}
|
|
|
|
if (!options || options.reversed !== false) {
|
|
if (desiredScrollBottom > this.getScrollBottom()) {
|
|
this.setScrollBottom(desiredScrollBottom)
|
|
}
|
|
if (desiredScrollTop < this.getScrollTop()) {
|
|
this.setScrollTop(desiredScrollTop)
|
|
}
|
|
} else {
|
|
if (desiredScrollTop < this.getScrollTop()) {
|
|
this.setScrollTop(desiredScrollTop)
|
|
}
|
|
if (desiredScrollBottom > this.getScrollBottom()) {
|
|
this.setScrollBottom(desiredScrollBottom)
|
|
}
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
autoscrollHorizontally (screenRange, options) {
|
|
const horizontalScrollMargin = this.getHorizontalAutoscrollMargin()
|
|
|
|
const gutterContainerWidth = this.getGutterContainerWidth()
|
|
let left = this.pixelLeftForRowAndColumn(screenRange.start.row, screenRange.start.column) + gutterContainerWidth
|
|
let right = this.pixelLeftForRowAndColumn(screenRange.end.row, screenRange.end.column) + gutterContainerWidth
|
|
const desiredScrollLeft = Math.max(0, left - horizontalScrollMargin - gutterContainerWidth)
|
|
const desiredScrollRight = Math.min(this.getScrollWidth(), right + horizontalScrollMargin)
|
|
|
|
if (!options || options.reversed !== false) {
|
|
if (desiredScrollRight > this.getScrollRight()) {
|
|
this.setScrollRight(desiredScrollRight)
|
|
}
|
|
if (desiredScrollLeft < this.getScrollLeft()) {
|
|
this.setScrollLeft(desiredScrollLeft)
|
|
}
|
|
} else {
|
|
if (desiredScrollLeft < this.getScrollLeft()) {
|
|
this.setScrollLeft(desiredScrollLeft)
|
|
}
|
|
if (desiredScrollRight > this.getScrollRight()) {
|
|
this.setScrollRight(desiredScrollRight)
|
|
}
|
|
}
|
|
}
|
|
|
|
getVerticalAutoscrollMargin () {
|
|
const maxMarginInLines = Math.floor(
|
|
(this.getScrollContainerClientHeight() / this.getLineHeight() - 1) / 2
|
|
)
|
|
const marginInLines = Math.min(
|
|
this.props.model.verticalScrollMargin,
|
|
maxMarginInLines
|
|
)
|
|
return marginInLines * this.getLineHeight()
|
|
}
|
|
|
|
getHorizontalAutoscrollMargin () {
|
|
const maxMarginInBaseCharacters = Math.floor(
|
|
(this.getScrollContainerClientWidth() / this.getBaseCharacterWidth() - 1) / 2
|
|
)
|
|
const marginInBaseCharacters = Math.min(
|
|
this.props.model.horizontalScrollMargin,
|
|
maxMarginInBaseCharacters
|
|
)
|
|
return marginInBaseCharacters * this.getBaseCharacterWidth()
|
|
}
|
|
|
|
// This method is called at the beginning of a frame render to relay any
|
|
// potential changes in the editor's width into the model before proceeding.
|
|
updateModelSoftWrapColumn () {
|
|
const {model} = this.props
|
|
const newEditorWidthInChars = this.getScrollContainerClientWidthInBaseCharacters()
|
|
if (newEditorWidthInChars !== model.getEditorWidthInChars()) {
|
|
this.suppressUpdates = true
|
|
|
|
const renderedStartRow = this.getRenderedStartRow()
|
|
this.props.model.setEditorWidthInChars(newEditorWidthInChars)
|
|
|
|
// Relaying a change in to the editor's client width may cause the
|
|
// vertical scrollbar to appear or disappear, which causes the editor's
|
|
// client width to change *again*. Make sure the display layer is fully
|
|
// populated for the visible area before recalculating the editor's
|
|
// width in characters. Then update the display layer *again* just in
|
|
// case a change in scrollbar visibility causes lines to wrap
|
|
// differently. We capture the renderedStartRow before resetting the
|
|
// display layer because once it has been reset, we can't compute the
|
|
// rendered start row accurately. 😥
|
|
this.populateVisibleRowRange(renderedStartRow)
|
|
this.props.model.setEditorWidthInChars(this.getScrollContainerClientWidthInBaseCharacters())
|
|
this.derivedDimensionsCache = {}
|
|
|
|
this.suppressUpdates = false
|
|
}
|
|
}
|
|
|
|
// This method exists because it existed in the previous implementation and some
|
|
// package tests relied on it
|
|
measureDimensions () {
|
|
this.measureCharacterDimensions()
|
|
this.measureGutterDimensions()
|
|
this.measureClientContainerHeight()
|
|
this.measureClientContainerWidth()
|
|
this.measureScrollbarDimensions()
|
|
this.hasInitialMeasurements = true
|
|
}
|
|
|
|
measureCharacterDimensions () {
|
|
this.measurements.lineHeight = Math.max(1, this.refs.characterMeasurementLine.getBoundingClientRect().height)
|
|
this.measurements.baseCharacterWidth = this.refs.normalWidthCharacterSpan.getBoundingClientRect().width
|
|
this.measurements.doubleWidthCharacterWidth = this.refs.doubleWidthCharacterSpan.getBoundingClientRect().width
|
|
this.measurements.halfWidthCharacterWidth = this.refs.halfWidthCharacterSpan.getBoundingClientRect().width
|
|
this.measurements.koreanCharacterWidth = this.refs.koreanCharacterSpan.getBoundingClientRect().width
|
|
|
|
this.props.model.setLineHeightInPixels(this.measurements.lineHeight)
|
|
this.props.model.setDefaultCharWidth(
|
|
this.measurements.baseCharacterWidth,
|
|
this.measurements.doubleWidthCharacterWidth,
|
|
this.measurements.halfWidthCharacterWidth,
|
|
this.measurements.koreanCharacterWidth
|
|
)
|
|
this.lineTopIndex.setDefaultLineHeight(this.measurements.lineHeight)
|
|
}
|
|
|
|
measureGutterDimensions () {
|
|
let dimensionsChanged = false
|
|
|
|
if (this.refs.gutterContainer) {
|
|
const gutterContainerWidth = this.refs.gutterContainer.element.offsetWidth
|
|
if (gutterContainerWidth !== this.measurements.gutterContainerWidth) {
|
|
dimensionsChanged = true
|
|
this.measurements.gutterContainerWidth = gutterContainerWidth
|
|
}
|
|
} else {
|
|
this.measurements.gutterContainerWidth = 0
|
|
}
|
|
|
|
if (this.refs.gutterContainer && this.refs.gutterContainer.refs.lineNumberGutter) {
|
|
const lineNumberGutterWidth = this.refs.gutterContainer.refs.lineNumberGutter.element.offsetWidth
|
|
if (lineNumberGutterWidth !== this.measurements.lineNumberGutterWidth) {
|
|
dimensionsChanged = true
|
|
this.measurements.lineNumberGutterWidth = lineNumberGutterWidth
|
|
}
|
|
} else {
|
|
this.measurements.lineNumberGutterWidth = 0
|
|
}
|
|
|
|
return dimensionsChanged
|
|
}
|
|
|
|
measureClientContainerHeight () {
|
|
const clientContainerHeight = this.refs.clientContainer.offsetHeight
|
|
if (clientContainerHeight !== this.measurements.clientContainerHeight) {
|
|
this.measurements.clientContainerHeight = clientContainerHeight
|
|
return true
|
|
} else {
|
|
return false
|
|
}
|
|
}
|
|
|
|
measureClientContainerWidth () {
|
|
const clientContainerWidth = this.refs.clientContainer.offsetWidth
|
|
if (clientContainerWidth !== this.measurements.clientContainerWidth) {
|
|
this.measurements.clientContainerWidth = clientContainerWidth
|
|
return true
|
|
} else {
|
|
return false
|
|
}
|
|
}
|
|
|
|
measureScrollbarDimensions () {
|
|
if (this.props.model.isMini()) {
|
|
this.measurements.verticalScrollbarWidth = 0
|
|
this.measurements.horizontalScrollbarHeight = 0
|
|
} else {
|
|
this.measurements.verticalScrollbarWidth = this.refs.verticalScrollbar.getRealScrollbarWidth()
|
|
this.measurements.horizontalScrollbarHeight = this.refs.horizontalScrollbar.getRealScrollbarHeight()
|
|
}
|
|
}
|
|
|
|
measureLongestLineWidth () {
|
|
if (this.longestLineToMeasure) {
|
|
const lineComponent = this.lineComponentsByScreenLineId.get(this.longestLineToMeasure.id)
|
|
this.measurements.longestLineWidth = lineComponent.element.firstChild.offsetWidth
|
|
this.longestLineToMeasure = null
|
|
}
|
|
}
|
|
|
|
requestLineToMeasure (row, screenLine) {
|
|
this.linesToMeasure.set(row, screenLine)
|
|
}
|
|
|
|
requestHorizontalMeasurement (row, column) {
|
|
if (column === 0) return
|
|
|
|
const screenLine = this.props.model.screenLineForScreenRow(row)
|
|
if (screenLine) {
|
|
this.requestLineToMeasure(row, screenLine)
|
|
|
|
let columns = this.horizontalPositionsToMeasure.get(row)
|
|
if (columns == null) {
|
|
columns = []
|
|
this.horizontalPositionsToMeasure.set(row, columns)
|
|
}
|
|
columns.push(column)
|
|
}
|
|
}
|
|
|
|
measureHorizontalPositions () {
|
|
this.horizontalPositionsToMeasure.forEach((columnsToMeasure, row) => {
|
|
columnsToMeasure.sort((a, b) => a - b)
|
|
|
|
const screenLine = this.renderedScreenLineForRow(row)
|
|
const lineComponent = this.lineComponentsByScreenLineId.get(screenLine.id)
|
|
|
|
if (!lineComponent) {
|
|
const error = new Error('Requested measurement of a line component that is not currently rendered')
|
|
error.metadata = {
|
|
row,
|
|
columnsToMeasure,
|
|
renderedScreenLineIds: this.renderedScreenLines.map((line) => line.id),
|
|
extraRenderedScreenLineIds: Array.from(this.extraRenderedScreenLines.keys()),
|
|
lineComponentScreenLineIds: Array.from(this.lineComponentsByScreenLineId.keys()),
|
|
renderedStartRow: this.getRenderedStartRow(),
|
|
renderedEndRow: this.getRenderedEndRow(),
|
|
requestedScreenLineId: screenLine.id
|
|
}
|
|
throw error
|
|
}
|
|
|
|
const lineNode = lineComponent.element
|
|
const textNodes = lineComponent.textNodes
|
|
let positionsForLine = this.horizontalPixelPositionsByScreenLineId.get(screenLine.id)
|
|
if (positionsForLine == null) {
|
|
positionsForLine = new Map()
|
|
this.horizontalPixelPositionsByScreenLineId.set(screenLine.id, positionsForLine)
|
|
}
|
|
|
|
this.measureHorizontalPositionsOnLine(lineNode, textNodes, columnsToMeasure, positionsForLine)
|
|
})
|
|
this.horizontalPositionsToMeasure.clear()
|
|
}
|
|
|
|
measureHorizontalPositionsOnLine (lineNode, textNodes, columnsToMeasure, positions) {
|
|
let lineNodeClientLeft = -1
|
|
let textNodeStartColumn = 0
|
|
let textNodesIndex = 0
|
|
let lastTextNodeRight = null
|
|
|
|
columnLoop: // eslint-disable-line no-labels
|
|
for (let columnsIndex = 0; columnsIndex < columnsToMeasure.length; columnsIndex++) {
|
|
const nextColumnToMeasure = columnsToMeasure[columnsIndex]
|
|
while (textNodesIndex < textNodes.length) {
|
|
if (nextColumnToMeasure === 0) {
|
|
positions.set(0, 0)
|
|
continue columnLoop // eslint-disable-line no-labels
|
|
}
|
|
|
|
if (positions.has(nextColumnToMeasure)) continue columnLoop // eslint-disable-line no-labels
|
|
const textNode = textNodes[textNodesIndex]
|
|
const textNodeEndColumn = textNodeStartColumn + textNode.textContent.length
|
|
|
|
if (nextColumnToMeasure < textNodeEndColumn) {
|
|
let clientPixelPosition
|
|
if (nextColumnToMeasure === textNodeStartColumn) {
|
|
clientPixelPosition = clientRectForRange(textNode, 0, 1).left
|
|
} else {
|
|
clientPixelPosition = clientRectForRange(textNode, 0, nextColumnToMeasure - textNodeStartColumn).right
|
|
}
|
|
|
|
if (lineNodeClientLeft === -1) {
|
|
lineNodeClientLeft = lineNode.getBoundingClientRect().left
|
|
}
|
|
|
|
positions.set(nextColumnToMeasure, Math.round(clientPixelPosition - lineNodeClientLeft))
|
|
continue columnLoop // eslint-disable-line no-labels
|
|
} else {
|
|
textNodesIndex++
|
|
textNodeStartColumn = textNodeEndColumn
|
|
}
|
|
}
|
|
|
|
if (lastTextNodeRight == null) {
|
|
const lastTextNode = textNodes[textNodes.length - 1]
|
|
lastTextNodeRight = clientRectForRange(lastTextNode, 0, lastTextNode.textContent.length).right
|
|
}
|
|
|
|
if (lineNodeClientLeft === -1) {
|
|
lineNodeClientLeft = lineNode.getBoundingClientRect().left
|
|
}
|
|
|
|
positions.set(nextColumnToMeasure, Math.round(lastTextNodeRight - lineNodeClientLeft))
|
|
}
|
|
}
|
|
|
|
rowForPixelPosition (pixelPosition) {
|
|
return Math.max(0, this.lineTopIndex.rowForPixelPosition(pixelPosition))
|
|
}
|
|
|
|
heightForBlockDecorationsBeforeRow (row) {
|
|
return this.pixelPositionAfterBlocksForRow(row) - this.pixelPositionBeforeBlocksForRow(row)
|
|
}
|
|
|
|
heightForBlockDecorationsAfterRow (row) {
|
|
const currentRowBottom = this.pixelPositionAfterBlocksForRow(row) + this.getLineHeight()
|
|
const nextRowTop = this.pixelPositionBeforeBlocksForRow(row + 1)
|
|
return nextRowTop - currentRowBottom
|
|
}
|
|
|
|
pixelPositionBeforeBlocksForRow (row) {
|
|
return this.lineTopIndex.pixelPositionBeforeBlocksForRow(row)
|
|
}
|
|
|
|
pixelPositionAfterBlocksForRow (row) {
|
|
return this.lineTopIndex.pixelPositionAfterBlocksForRow(row)
|
|
}
|
|
|
|
pixelLeftForRowAndColumn (row, column) {
|
|
if (column === 0) return 0
|
|
const screenLine = this.renderedScreenLineForRow(row)
|
|
if (screenLine) {
|
|
const horizontalPositionsByColumn = this.horizontalPixelPositionsByScreenLineId.get(screenLine.id)
|
|
if (horizontalPositionsByColumn) {
|
|
return horizontalPositionsByColumn.get(column)
|
|
}
|
|
}
|
|
}
|
|
|
|
screenPositionForPixelPosition ({top, left}) {
|
|
const {model} = this.props
|
|
|
|
const row = Math.min(
|
|
this.rowForPixelPosition(top),
|
|
model.getApproximateScreenLineCount() - 1
|
|
)
|
|
|
|
let screenLine = this.renderedScreenLineForRow(row)
|
|
if (!screenLine) {
|
|
this.requestLineToMeasure(row, model.screenLineForScreenRow(row))
|
|
this.updateSyncBeforeMeasuringContent()
|
|
this.measureContentDuringUpdateSync()
|
|
screenLine = this.renderedScreenLineForRow(row)
|
|
}
|
|
|
|
const linesClientLeft = this.refs.lineTiles.getBoundingClientRect().left
|
|
const targetClientLeft = linesClientLeft + Math.max(0, left)
|
|
const {textNodes} = this.lineComponentsByScreenLineId.get(screenLine.id)
|
|
|
|
let containingTextNodeIndex
|
|
{
|
|
let low = 0
|
|
let high = textNodes.length - 1
|
|
while (low <= high) {
|
|
const mid = low + ((high - low) >> 1)
|
|
const textNode = textNodes[mid]
|
|
const textNodeRect = clientRectForRange(textNode, 0, textNode.length)
|
|
|
|
if (targetClientLeft < textNodeRect.left) {
|
|
high = mid - 1
|
|
containingTextNodeIndex = Math.max(0, mid - 1)
|
|
} else if (targetClientLeft > textNodeRect.right) {
|
|
low = mid + 1
|
|
containingTextNodeIndex = Math.min(textNodes.length - 1, mid + 1)
|
|
} else {
|
|
containingTextNodeIndex = mid
|
|
break
|
|
}
|
|
}
|
|
}
|
|
const containingTextNode = textNodes[containingTextNodeIndex]
|
|
let characterIndex = 0
|
|
{
|
|
let low = 0
|
|
let high = containingTextNode.length - 1
|
|
while (low <= high) {
|
|
const charIndex = low + ((high - low) >> 1)
|
|
const nextCharIndex = isPairedCharacter(containingTextNode.textContent, charIndex)
|
|
? charIndex + 2
|
|
: charIndex + 1
|
|
|
|
const rangeRect = clientRectForRange(containingTextNode, charIndex, nextCharIndex)
|
|
if (targetClientLeft < rangeRect.left) {
|
|
high = charIndex - 1
|
|
characterIndex = Math.max(0, charIndex - 1)
|
|
} else if (targetClientLeft > rangeRect.right) {
|
|
low = nextCharIndex
|
|
characterIndex = Math.min(containingTextNode.textContent.length, nextCharIndex)
|
|
} else {
|
|
if (targetClientLeft <= ((rangeRect.left + rangeRect.right) / 2)) {
|
|
characterIndex = charIndex
|
|
} else {
|
|
characterIndex = nextCharIndex
|
|
}
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
let textNodeStartColumn = 0
|
|
for (let i = 0; i < containingTextNodeIndex; i++) {
|
|
textNodeStartColumn = textNodeStartColumn + textNodes[i].length
|
|
}
|
|
const column = textNodeStartColumn + characterIndex
|
|
|
|
return Point(row, column)
|
|
}
|
|
|
|
didResetDisplayLayer () {
|
|
this.spliceLineTopIndex(0, Infinity, Infinity)
|
|
this.scheduleUpdate()
|
|
}
|
|
|
|
didChangeDisplayLayer (changes) {
|
|
for (let i = 0; i < changes.length; i++) {
|
|
const {oldRange, newRange} = changes[i]
|
|
this.spliceLineTopIndex(
|
|
newRange.start.row,
|
|
oldRange.end.row - oldRange.start.row,
|
|
newRange.end.row - newRange.start.row
|
|
)
|
|
}
|
|
|
|
this.scheduleUpdate()
|
|
}
|
|
|
|
didChangeSelectionRange () {
|
|
const {model} = this.props
|
|
|
|
if (this.getPlatform() === 'linux') {
|
|
if (this.selectionClipboardImmediateId) {
|
|
clearImmediate(this.selectionClipboardImmediateId)
|
|
}
|
|
|
|
this.selectionClipboardImmediateId = setImmediate(() => {
|
|
this.selectionClipboardImmediateId = null
|
|
|
|
if (model.isDestroyed()) return
|
|
|
|
const selectedText = model.getSelectedText()
|
|
if (selectedText) {
|
|
// This uses ipcRenderer.send instead of clipboard.writeText because
|
|
// clipboard.writeText is a sync ipcRenderer call on Linux and that
|
|
// will slow down selections.
|
|
electron.ipcRenderer.send('write-text-to-selection-clipboard', selectedText)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
observeBlockDecorations () {
|
|
const {model} = this.props
|
|
const decorations = model.getDecorations({type: 'block'})
|
|
for (let i = 0; i < decorations.length; i++) {
|
|
this.addBlockDecoration(decorations[i])
|
|
}
|
|
}
|
|
|
|
addBlockDecoration (decoration, subscribeToChanges = true) {
|
|
const marker = decoration.getMarker()
|
|
const {item, position} = decoration.getProperties()
|
|
const element = TextEditor.viewForItem(item)
|
|
|
|
if (marker.isValid()) {
|
|
const row = marker.getHeadScreenPosition().row
|
|
this.lineTopIndex.insertBlock(decoration, row, 0, position === 'after')
|
|
this.blockDecorationsToMeasure.add(decoration)
|
|
this.blockDecorationsByElement.set(element, decoration)
|
|
this.blockDecorationResizeObserver.observe(element)
|
|
|
|
this.scheduleUpdate()
|
|
}
|
|
|
|
if (subscribeToChanges) {
|
|
let wasValid = marker.isValid()
|
|
|
|
const didUpdateDisposable = marker.bufferMarker.onDidChange(({textChanged}) => {
|
|
const isValid = marker.isValid()
|
|
if (wasValid && !isValid) {
|
|
wasValid = false
|
|
this.blockDecorationsToMeasure.delete(decoration)
|
|
this.heightsByBlockDecoration.delete(decoration)
|
|
this.blockDecorationsByElement.delete(element)
|
|
this.blockDecorationResizeObserver.unobserve(element)
|
|
this.lineTopIndex.removeBlock(decoration)
|
|
this.scheduleUpdate()
|
|
} else if (!wasValid && isValid) {
|
|
wasValid = true
|
|
this.addBlockDecoration(decoration, false)
|
|
} else if (isValid && !textChanged) {
|
|
this.lineTopIndex.moveBlock(decoration, marker.getHeadScreenPosition().row)
|
|
this.scheduleUpdate()
|
|
}
|
|
})
|
|
|
|
const didDestroyDisposable = decoration.onDidDestroy(() => {
|
|
didUpdateDisposable.dispose()
|
|
didDestroyDisposable.dispose()
|
|
|
|
if (wasValid) {
|
|
wasValid = false
|
|
this.blockDecorationsToMeasure.delete(decoration)
|
|
this.heightsByBlockDecoration.delete(decoration)
|
|
this.blockDecorationsByElement.delete(element)
|
|
this.blockDecorationResizeObserver.unobserve(element)
|
|
this.lineTopIndex.removeBlock(decoration)
|
|
this.scheduleUpdate()
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
didResizeBlockDecorations (entries) {
|
|
if (!this.visible) return
|
|
|
|
for (let i = 0; i < entries.length; i++) {
|
|
const {target, contentRect} = entries[i]
|
|
const decoration = this.blockDecorationsByElement.get(target)
|
|
const previousHeight = this.heightsByBlockDecoration.get(decoration)
|
|
if (this.element.contains(target) && contentRect.height !== previousHeight) {
|
|
this.invalidateBlockDecorationDimensions(decoration)
|
|
}
|
|
}
|
|
}
|
|
|
|
invalidateBlockDecorationDimensions (decoration) {
|
|
this.blockDecorationsToMeasure.add(decoration)
|
|
this.scheduleUpdate()
|
|
}
|
|
|
|
spliceLineTopIndex (startRow, oldExtent, newExtent) {
|
|
const invalidatedBlockDecorations = this.lineTopIndex.splice(startRow, oldExtent, newExtent)
|
|
invalidatedBlockDecorations.forEach((decoration) => {
|
|
const newPosition = decoration.getMarker().getHeadScreenPosition()
|
|
this.lineTopIndex.moveBlock(decoration, newPosition.row)
|
|
})
|
|
}
|
|
|
|
isVisible () {
|
|
return this.element.offsetWidth > 0 || this.element.offsetHeight > 0
|
|
}
|
|
|
|
getWindowInnerHeight () {
|
|
return window.innerHeight
|
|
}
|
|
|
|
getWindowInnerWidth () {
|
|
return window.innerWidth
|
|
}
|
|
|
|
getLineHeight () {
|
|
return this.measurements.lineHeight
|
|
}
|
|
|
|
getBaseCharacterWidth () {
|
|
return this.measurements.baseCharacterWidth
|
|
}
|
|
|
|
getLongestLineWidth () {
|
|
return this.measurements.longestLineWidth
|
|
}
|
|
|
|
getClientContainerHeight () {
|
|
return this.measurements.clientContainerHeight
|
|
}
|
|
|
|
getClientContainerWidth () {
|
|
return this.measurements.clientContainerWidth
|
|
}
|
|
|
|
getScrollContainerWidth () {
|
|
if (this.props.model.getAutoWidth()) {
|
|
return this.getScrollWidth()
|
|
} else {
|
|
return this.getClientContainerWidth() - this.getGutterContainerWidth()
|
|
}
|
|
}
|
|
|
|
getScrollContainerHeight () {
|
|
if (this.props.model.getAutoHeight()) {
|
|
return this.getScrollHeight()
|
|
} else {
|
|
return this.getClientContainerHeight()
|
|
}
|
|
}
|
|
|
|
getScrollContainerClientWidth () {
|
|
if (this.canScrollVertically()) {
|
|
return this.getScrollContainerWidth() - this.getVerticalScrollbarWidth()
|
|
} else {
|
|
return this.getScrollContainerWidth()
|
|
}
|
|
}
|
|
|
|
getScrollContainerClientHeight () {
|
|
if (this.canScrollHorizontally()) {
|
|
return this.getScrollContainerHeight() - this.getHorizontalScrollbarHeight()
|
|
} else {
|
|
return this.getScrollContainerHeight()
|
|
}
|
|
}
|
|
|
|
canScrollVertically () {
|
|
const {model} = this.props
|
|
if (model.isMini()) return false
|
|
if (model.getAutoHeight()) return false
|
|
if (this.getContentHeight() > this.getScrollContainerHeight()) return true
|
|
return (
|
|
this.getContentWidth() > this.getScrollContainerWidth() &&
|
|
this.getContentHeight() > (this.getScrollContainerHeight() - this.getHorizontalScrollbarHeight())
|
|
)
|
|
}
|
|
|
|
canScrollHorizontally () {
|
|
const {model} = this.props
|
|
if (model.isMini()) return false
|
|
if (model.getAutoWidth()) return false
|
|
if (model.isSoftWrapped()) return false
|
|
if (this.getContentWidth() > this.getScrollContainerWidth()) return true
|
|
return (
|
|
this.getContentHeight() > this.getScrollContainerHeight() &&
|
|
this.getContentWidth() > (this.getScrollContainerWidth() - this.getVerticalScrollbarWidth())
|
|
)
|
|
}
|
|
|
|
getScrollHeight () {
|
|
if (this.props.model.getScrollPastEnd()) {
|
|
return this.getContentHeight() + Math.max(
|
|
3 * this.getLineHeight(),
|
|
this.getScrollContainerClientHeight() - (3 * this.getLineHeight())
|
|
)
|
|
} else if (this.props.model.getAutoHeight()) {
|
|
return this.getContentHeight()
|
|
} else {
|
|
return Math.max(this.getContentHeight(), this.getScrollContainerClientHeight())
|
|
}
|
|
}
|
|
|
|
getScrollWidth () {
|
|
const {model} = this.props
|
|
|
|
if (model.isSoftWrapped()) {
|
|
return this.getScrollContainerClientWidth()
|
|
} else if (model.getAutoWidth()) {
|
|
return this.getContentWidth()
|
|
} else {
|
|
return Math.max(this.getContentWidth(), this.getScrollContainerClientWidth())
|
|
}
|
|
}
|
|
|
|
getContentHeight () {
|
|
return this.pixelPositionAfterBlocksForRow(this.props.model.getApproximateScreenLineCount())
|
|
}
|
|
|
|
getContentWidth () {
|
|
return Math.ceil(this.getLongestLineWidth() + this.getBaseCharacterWidth())
|
|
}
|
|
|
|
getScrollContainerClientWidthInBaseCharacters () {
|
|
return Math.floor(this.getScrollContainerClientWidth() / this.getBaseCharacterWidth())
|
|
}
|
|
|
|
getGutterContainerWidth () {
|
|
return this.measurements.gutterContainerWidth
|
|
}
|
|
|
|
getLineNumberGutterWidth () {
|
|
return this.measurements.lineNumberGutterWidth
|
|
}
|
|
|
|
getVerticalScrollbarWidth () {
|
|
return this.measurements.verticalScrollbarWidth
|
|
}
|
|
|
|
getHorizontalScrollbarHeight () {
|
|
return this.measurements.horizontalScrollbarHeight
|
|
}
|
|
|
|
getRowsPerTile () {
|
|
return this.props.rowsPerTile || DEFAULT_ROWS_PER_TILE
|
|
}
|
|
|
|
tileStartRowForRow (row) {
|
|
return row - (row % this.getRowsPerTile())
|
|
}
|
|
|
|
getRenderedStartRow () {
|
|
if (this.derivedDimensionsCache.renderedStartRow == null) {
|
|
this.derivedDimensionsCache.renderedStartRow = this.tileStartRowForRow(this.getFirstVisibleRow())
|
|
}
|
|
|
|
return this.derivedDimensionsCache.renderedStartRow
|
|
}
|
|
|
|
getRenderedEndRow () {
|
|
if (this.derivedDimensionsCache.renderedEndRow == null) {
|
|
this.derivedDimensionsCache.renderedEndRow = Math.min(
|
|
this.props.model.getApproximateScreenLineCount(),
|
|
this.getRenderedStartRow() + this.getVisibleTileCount() * this.getRowsPerTile()
|
|
)
|
|
}
|
|
|
|
return this.derivedDimensionsCache.renderedEndRow
|
|
}
|
|
|
|
getRenderedRowCount () {
|
|
if (this.derivedDimensionsCache.renderedRowCount == null) {
|
|
this.derivedDimensionsCache.renderedRowCount = Math.max(0, this.getRenderedEndRow() - this.getRenderedStartRow())
|
|
}
|
|
|
|
return this.derivedDimensionsCache.renderedRowCount
|
|
}
|
|
|
|
getRenderedTileCount () {
|
|
if (this.derivedDimensionsCache.renderedTileCount == null) {
|
|
this.derivedDimensionsCache.renderedTileCount = Math.ceil(this.getRenderedRowCount() / this.getRowsPerTile())
|
|
}
|
|
|
|
return this.derivedDimensionsCache.renderedTileCount
|
|
}
|
|
|
|
getFirstVisibleRow () {
|
|
if (this.derivedDimensionsCache.firstVisibleRow == null) {
|
|
this.derivedDimensionsCache.firstVisibleRow = this.rowForPixelPosition(this.getScrollTop())
|
|
}
|
|
|
|
return this.derivedDimensionsCache.firstVisibleRow
|
|
}
|
|
|
|
getLastVisibleRow () {
|
|
if (this.derivedDimensionsCache.lastVisibleRow == null) {
|
|
this.derivedDimensionsCache.lastVisibleRow = Math.min(
|
|
this.props.model.getApproximateScreenLineCount() - 1,
|
|
this.rowForPixelPosition(this.getScrollBottom())
|
|
)
|
|
}
|
|
|
|
return this.derivedDimensionsCache.lastVisibleRow
|
|
}
|
|
|
|
// We may render more tiles than needed if some contain block decorations,
|
|
// but keeping this calculation simple ensures the number of tiles remains
|
|
// fixed for a given editor height, which eliminates situations where a
|
|
// tile is repeatedly added and removed during scrolling in certain
|
|
// combinations of editor height and line height.
|
|
getVisibleTileCount () {
|
|
if (this.derivedDimensionsCache.visibleTileCount == null) {
|
|
const editorHeightInTiles = this.getScrollContainerHeight() / this.getLineHeight() / this.getRowsPerTile()
|
|
this.derivedDimensionsCache.visibleTileCount = Math.ceil(editorHeightInTiles) + 1
|
|
}
|
|
return this.derivedDimensionsCache.visibleTileCount
|
|
}
|
|
|
|
getFirstVisibleColumn () {
|
|
return Math.floor(this.getScrollLeft() / this.getBaseCharacterWidth())
|
|
}
|
|
|
|
getScrollTop () {
|
|
this.scrollTop = Math.min(this.getMaxScrollTop(), this.scrollTop)
|
|
return this.scrollTop
|
|
}
|
|
|
|
setScrollTop (scrollTop) {
|
|
if (Number.isNaN(scrollTop) || scrollTop == null) return false
|
|
|
|
scrollTop = roundToPhysicalPixelBoundary(Math.max(0, Math.min(this.getMaxScrollTop(), scrollTop)))
|
|
if (scrollTop !== this.scrollTop) {
|
|
this.derivedDimensionsCache = {}
|
|
this.scrollTopPending = true
|
|
this.scrollTop = scrollTop
|
|
this.element.emitter.emit('did-change-scroll-top', scrollTop)
|
|
return true
|
|
} else {
|
|
return false
|
|
}
|
|
}
|
|
|
|
getMaxScrollTop () {
|
|
return Math.round(Math.max(0, this.getScrollHeight() - this.getScrollContainerClientHeight()))
|
|
}
|
|
|
|
getScrollBottom () {
|
|
return this.getScrollTop() + this.getScrollContainerClientHeight()
|
|
}
|
|
|
|
setScrollBottom (scrollBottom) {
|
|
return this.setScrollTop(scrollBottom - this.getScrollContainerClientHeight())
|
|
}
|
|
|
|
getScrollLeft () {
|
|
return this.scrollLeft
|
|
}
|
|
|
|
setScrollLeft (scrollLeft) {
|
|
if (Number.isNaN(scrollLeft) || scrollLeft == null) return false
|
|
|
|
scrollLeft = roundToPhysicalPixelBoundary(Math.max(0, Math.min(this.getMaxScrollLeft(), scrollLeft)))
|
|
if (scrollLeft !== this.scrollLeft) {
|
|
this.scrollLeftPending = true
|
|
this.scrollLeft = scrollLeft
|
|
this.element.emitter.emit('did-change-scroll-left', scrollLeft)
|
|
return true
|
|
} else {
|
|
return false
|
|
}
|
|
}
|
|
|
|
getMaxScrollLeft () {
|
|
return Math.round(Math.max(0, this.getScrollWidth() - this.getScrollContainerClientWidth()))
|
|
}
|
|
|
|
getScrollRight () {
|
|
return this.getScrollLeft() + this.getScrollContainerClientWidth()
|
|
}
|
|
|
|
setScrollRight (scrollRight) {
|
|
return this.setScrollLeft(scrollRight - this.getScrollContainerClientWidth())
|
|
}
|
|
|
|
setScrollTopRow (scrollTopRow, scheduleUpdate = true) {
|
|
if (this.hasInitialMeasurements) {
|
|
const didScroll = this.setScrollTop(this.pixelPositionBeforeBlocksForRow(scrollTopRow))
|
|
if (didScroll && scheduleUpdate) {
|
|
this.scheduleUpdate()
|
|
}
|
|
return didScroll
|
|
} else {
|
|
this.pendingScrollTopRow = scrollTopRow
|
|
return false
|
|
}
|
|
}
|
|
|
|
getScrollTopRow () {
|
|
if (this.hasInitialMeasurements) {
|
|
return this.rowForPixelPosition(this.getScrollTop())
|
|
} else {
|
|
return this.pendingScrollTopRow || 0
|
|
}
|
|
}
|
|
|
|
setScrollLeftColumn (scrollLeftColumn, scheduleUpdate = true) {
|
|
if (this.hasInitialMeasurements && this.getLongestLineWidth() != null) {
|
|
const didScroll = this.setScrollLeft(scrollLeftColumn * this.getBaseCharacterWidth())
|
|
if (didScroll && scheduleUpdate) {
|
|
this.scheduleUpdate()
|
|
}
|
|
return didScroll
|
|
} else {
|
|
this.pendingScrollLeftColumn = scrollLeftColumn
|
|
return false
|
|
}
|
|
}
|
|
|
|
getScrollLeftColumn () {
|
|
if (this.hasInitialMeasurements && this.getLongestLineWidth() != null) {
|
|
return Math.round(this.getScrollLeft() / this.getBaseCharacterWidth())
|
|
} else {
|
|
return this.pendingScrollLeftColumn || 0
|
|
}
|
|
}
|
|
|
|
// Ensure the spatial index is populated with rows that are currently visible
|
|
populateVisibleRowRange (renderedStartRow) {
|
|
const {model} = this.props
|
|
const previousScreenLineCount = model.getApproximateScreenLineCount()
|
|
|
|
const renderedEndRow = renderedStartRow + (this.getVisibleTileCount() * this.getRowsPerTile())
|
|
this.props.model.displayLayer.populateSpatialIndexIfNeeded(Infinity, renderedEndRow)
|
|
|
|
// If the approximate screen line count changes, previously-cached derived
|
|
// dimensions could now be out of date.
|
|
if (model.getApproximateScreenLineCount() !== previousScreenLineCount) {
|
|
this.derivedDimensionsCache = {}
|
|
}
|
|
}
|
|
|
|
populateVisibleTiles () {
|
|
const startRow = this.getRenderedStartRow()
|
|
const endRow = this.getRenderedEndRow()
|
|
const freeTileIds = []
|
|
for (let i = 0; i < this.renderedTileStartRows.length; i++) {
|
|
const tileStartRow = this.renderedTileStartRows[i]
|
|
if (tileStartRow < startRow || tileStartRow >= endRow) {
|
|
const tileId = this.idsByTileStartRow.get(tileStartRow)
|
|
freeTileIds.push(tileId)
|
|
this.idsByTileStartRow.delete(tileStartRow)
|
|
}
|
|
}
|
|
|
|
const rowsPerTile = this.getRowsPerTile()
|
|
this.renderedTileStartRows.length = this.getRenderedTileCount()
|
|
for (let tileStartRow = startRow, i = 0; tileStartRow < endRow; tileStartRow = tileStartRow + rowsPerTile, i++) {
|
|
this.renderedTileStartRows[i] = tileStartRow
|
|
if (!this.idsByTileStartRow.has(tileStartRow)) {
|
|
if (freeTileIds.length > 0) {
|
|
this.idsByTileStartRow.set(tileStartRow, freeTileIds.shift())
|
|
} else {
|
|
this.idsByTileStartRow.set(tileStartRow, this.nextTileId++)
|
|
}
|
|
}
|
|
}
|
|
|
|
this.renderedTileStartRows.sort((a, b) => this.idsByTileStartRow.get(a) - this.idsByTileStartRow.get(b))
|
|
}
|
|
|
|
getNextUpdatePromise () {
|
|
if (!this.nextUpdatePromise) {
|
|
this.nextUpdatePromise = new Promise((resolve) => {
|
|
this.resolveNextUpdatePromise = () => {
|
|
this.nextUpdatePromise = null
|
|
this.resolveNextUpdatePromise = null
|
|
resolve()
|
|
}
|
|
})
|
|
}
|
|
return this.nextUpdatePromise
|
|
}
|
|
|
|
setInputEnabled (inputEnabled) {
|
|
this.props.model.update({readOnly: !inputEnabled})
|
|
}
|
|
|
|
isInputEnabled (inputEnabled) {
|
|
return !this.props.model.isReadOnly()
|
|
}
|
|
|
|
getHiddenInput () {
|
|
return this.refs.cursorsAndInput.refs.hiddenInput
|
|
}
|
|
|
|
getPlatform () {
|
|
return this.props.platform || process.platform
|
|
}
|
|
|
|
getChromeVersion () {
|
|
return this.props.chromeVersion || parseInt(process.versions.chrome)
|
|
}
|
|
}
|
|
|
|
class DummyScrollbarComponent {
|
|
constructor (props) {
|
|
this.props = props
|
|
etch.initialize(this)
|
|
}
|
|
|
|
update (newProps) {
|
|
const oldProps = this.props
|
|
this.props = newProps
|
|
etch.updateSync(this)
|
|
|
|
const shouldFlushScrollPosition = (
|
|
newProps.scrollTop !== oldProps.scrollTop ||
|
|
newProps.scrollLeft !== oldProps.scrollLeft
|
|
)
|
|
if (shouldFlushScrollPosition) this.flushScrollPosition()
|
|
}
|
|
|
|
flushScrollPosition () {
|
|
if (this.props.orientation === 'horizontal') {
|
|
this.element.scrollLeft = this.props.scrollLeft
|
|
} else {
|
|
this.element.scrollTop = this.props.scrollTop
|
|
}
|
|
}
|
|
|
|
render () {
|
|
const {
|
|
orientation, scrollWidth, scrollHeight,
|
|
verticalScrollbarWidth, horizontalScrollbarHeight,
|
|
canScroll, forceScrollbarVisible, didScroll
|
|
} = this.props
|
|
|
|
const outerStyle = {
|
|
position: 'absolute',
|
|
contain: 'content',
|
|
zIndex: 1,
|
|
willChange: 'transform'
|
|
}
|
|
if (!canScroll) outerStyle.visibility = 'hidden'
|
|
|
|
const innerStyle = {}
|
|
if (orientation === 'horizontal') {
|
|
let right = (verticalScrollbarWidth || 0)
|
|
outerStyle.bottom = 0
|
|
outerStyle.left = 0
|
|
outerStyle.right = right + 'px'
|
|
outerStyle.height = '15px'
|
|
outerStyle.overflowY = 'hidden'
|
|
outerStyle.overflowX = forceScrollbarVisible ? 'scroll' : 'auto'
|
|
outerStyle.cursor = 'default'
|
|
innerStyle.height = '15px'
|
|
innerStyle.width = (scrollWidth || 0) + 'px'
|
|
} else {
|
|
let bottom = (horizontalScrollbarHeight || 0)
|
|
outerStyle.right = 0
|
|
outerStyle.top = 0
|
|
outerStyle.bottom = bottom + 'px'
|
|
outerStyle.width = '15px'
|
|
outerStyle.overflowX = 'hidden'
|
|
outerStyle.overflowY = forceScrollbarVisible ? 'scroll' : 'auto'
|
|
outerStyle.cursor = 'default'
|
|
innerStyle.width = '15px'
|
|
innerStyle.height = (scrollHeight || 0) + 'px'
|
|
}
|
|
|
|
return $.div(
|
|
{
|
|
className: `${orientation}-scrollbar`,
|
|
style: outerStyle,
|
|
on: {
|
|
scroll: didScroll,
|
|
mousedown: this.didMouseDown
|
|
}
|
|
},
|
|
$.div({style: innerStyle})
|
|
)
|
|
}
|
|
|
|
didMouseDown (event) {
|
|
let {bottom, right} = this.element.getBoundingClientRect()
|
|
const clickedOnScrollbar = (this.props.orientation === 'horizontal')
|
|
? event.clientY >= (bottom - this.getRealScrollbarHeight())
|
|
: event.clientX >= (right - this.getRealScrollbarWidth())
|
|
if (!clickedOnScrollbar) this.props.didMouseDown(event)
|
|
}
|
|
|
|
getRealScrollbarWidth () {
|
|
return this.element.offsetWidth - this.element.clientWidth
|
|
}
|
|
|
|
getRealScrollbarHeight () {
|
|
return this.element.offsetHeight - this.element.clientHeight
|
|
}
|
|
}
|
|
|
|
class GutterContainerComponent {
|
|
constructor (props) {
|
|
this.props = props
|
|
etch.initialize(this)
|
|
}
|
|
|
|
update (props) {
|
|
if (this.shouldUpdate(props)) {
|
|
this.props = props
|
|
etch.updateSync(this)
|
|
}
|
|
}
|
|
|
|
shouldUpdate (props) {
|
|
return (
|
|
!props.measuredContent ||
|
|
props.lineNumberGutterWidth !== this.props.lineNumberGutterWidth
|
|
)
|
|
}
|
|
|
|
render () {
|
|
const {hasInitialMeasurements, scrollTop, scrollHeight, guttersToRender, decorationsToRender} = this.props
|
|
|
|
const innerStyle = {
|
|
willChange: 'transform',
|
|
display: 'flex'
|
|
}
|
|
|
|
if (hasInitialMeasurements) {
|
|
innerStyle.transform = `translateY(${-roundToPhysicalPixelBoundary(scrollTop)}px)`
|
|
}
|
|
|
|
return $.div(
|
|
{
|
|
ref: 'gutterContainer',
|
|
key: 'gutterContainer',
|
|
className: 'gutter-container',
|
|
style: {
|
|
position: 'relative',
|
|
zIndex: 1,
|
|
backgroundColor: 'inherit'
|
|
}
|
|
},
|
|
$.div({style: innerStyle},
|
|
guttersToRender.map((gutter) => {
|
|
if (gutter.name === 'line-number') {
|
|
return this.renderLineNumberGutter(gutter)
|
|
} else {
|
|
return $(CustomGutterComponent, {
|
|
key: gutter,
|
|
element: gutter.getElement(),
|
|
name: gutter.name,
|
|
visible: gutter.isVisible(),
|
|
height: scrollHeight,
|
|
decorations: decorationsToRender.customGutter.get(gutter.name)
|
|
})
|
|
}
|
|
})
|
|
)
|
|
)
|
|
}
|
|
|
|
renderLineNumberGutter (gutter) {
|
|
const {
|
|
rootComponent, isLineNumberGutterVisible, showLineNumbers, hasInitialMeasurements, lineNumbersToRender,
|
|
renderedStartRow, renderedEndRow, rowsPerTile, decorationsToRender, didMeasureVisibleBlockDecoration,
|
|
scrollHeight, lineNumberGutterWidth, lineHeight
|
|
} = this.props
|
|
|
|
if (!isLineNumberGutterVisible) return null
|
|
|
|
if (hasInitialMeasurements) {
|
|
const {maxDigits, keys, bufferRows, screenRows, softWrappedFlags, foldableFlags} = lineNumbersToRender
|
|
return $(LineNumberGutterComponent, {
|
|
ref: 'lineNumberGutter',
|
|
element: gutter.getElement(),
|
|
rootComponent: rootComponent,
|
|
startRow: renderedStartRow,
|
|
endRow: renderedEndRow,
|
|
rowsPerTile: rowsPerTile,
|
|
maxDigits: maxDigits,
|
|
keys: keys,
|
|
bufferRows: bufferRows,
|
|
screenRows: screenRows,
|
|
softWrappedFlags: softWrappedFlags,
|
|
foldableFlags: foldableFlags,
|
|
decorations: decorationsToRender.lineNumbers,
|
|
blockDecorations: decorationsToRender.blocks,
|
|
didMeasureVisibleBlockDecoration: didMeasureVisibleBlockDecoration,
|
|
height: scrollHeight,
|
|
width: lineNumberGutterWidth,
|
|
lineHeight: lineHeight,
|
|
showLineNumbers
|
|
})
|
|
} else {
|
|
return $(LineNumberGutterComponent, {
|
|
ref: 'lineNumberGutter',
|
|
element: gutter.getElement(),
|
|
maxDigits: lineNumbersToRender.maxDigits,
|
|
showLineNumbers
|
|
})
|
|
}
|
|
}
|
|
}
|
|
|
|
class LineNumberGutterComponent {
|
|
constructor (props) {
|
|
this.props = props
|
|
this.element = this.props.element
|
|
this.virtualNode = $.div(null)
|
|
this.virtualNode.domNode = this.element
|
|
this.nodePool = new NodePool()
|
|
etch.updateSync(this)
|
|
}
|
|
|
|
update (newProps) {
|
|
if (this.shouldUpdate(newProps)) {
|
|
this.props = newProps
|
|
etch.updateSync(this)
|
|
}
|
|
}
|
|
|
|
render () {
|
|
const {
|
|
rootComponent, showLineNumbers, height, width, startRow, endRow, rowsPerTile,
|
|
maxDigits, keys, bufferRows, screenRows, softWrappedFlags, foldableFlags, decorations
|
|
} = this.props
|
|
|
|
let children = null
|
|
|
|
if (bufferRows) {
|
|
children = new Array(rootComponent.renderedTileStartRows.length)
|
|
for (let i = 0; i < rootComponent.renderedTileStartRows.length; i++) {
|
|
const tileStartRow = rootComponent.renderedTileStartRows[i]
|
|
const tileEndRow = Math.min(endRow, tileStartRow + rowsPerTile)
|
|
const tileChildren = new Array(tileEndRow - tileStartRow)
|
|
for (let row = tileStartRow; row < tileEndRow; row++) {
|
|
const indexInTile = row - tileStartRow
|
|
const j = row - startRow
|
|
const key = keys[j]
|
|
const softWrapped = softWrappedFlags[j]
|
|
const foldable = foldableFlags[j]
|
|
const bufferRow = bufferRows[j]
|
|
const screenRow = screenRows[j]
|
|
|
|
let className = 'line-number'
|
|
if (foldable) className = className + ' foldable'
|
|
|
|
const decorationsForRow = decorations[row - startRow]
|
|
if (decorationsForRow) className = className + ' ' + decorationsForRow
|
|
|
|
let number = null
|
|
if (showLineNumbers) {
|
|
number = softWrapped ? '•' : bufferRow + 1
|
|
number = NBSP_CHARACTER.repeat(maxDigits - number.length) + number
|
|
}
|
|
|
|
// We need to adjust the line number position to account for block
|
|
// decorations preceding the current row and following the preceding
|
|
// row. Note that we ignore the latter when the line number starts at
|
|
// the beginning of the tile, because the tile will already be
|
|
// positioned to take into account block decorations added after the
|
|
// last row of the previous tile.
|
|
let marginTop = rootComponent.heightForBlockDecorationsBeforeRow(row)
|
|
if (indexInTile > 0) marginTop += rootComponent.heightForBlockDecorationsAfterRow(row - 1)
|
|
|
|
tileChildren[row - tileStartRow] = $(LineNumberComponent, {
|
|
key,
|
|
className,
|
|
width,
|
|
bufferRow,
|
|
screenRow,
|
|
number,
|
|
marginTop,
|
|
nodePool: this.nodePool
|
|
})
|
|
}
|
|
|
|
const tileTop = rootComponent.pixelPositionBeforeBlocksForRow(tileStartRow)
|
|
const tileBottom = rootComponent.pixelPositionBeforeBlocksForRow(tileEndRow)
|
|
const tileHeight = tileBottom - tileTop
|
|
|
|
children[i] = $.div({
|
|
key: rootComponent.idsByTileStartRow.get(tileStartRow),
|
|
style: {
|
|
contain: 'layout style',
|
|
position: 'absolute',
|
|
top: 0,
|
|
height: tileHeight + 'px',
|
|
width: width + 'px',
|
|
transform: `translateY(${tileTop}px)`
|
|
}
|
|
}, ...tileChildren)
|
|
}
|
|
}
|
|
|
|
return $.div(
|
|
{
|
|
className: 'gutter line-numbers',
|
|
attributes: {'gutter-name': 'line-number'},
|
|
style: {position: 'relative', height: ceilToPhysicalPixelBoundary(height) + 'px'},
|
|
on: {
|
|
mousedown: this.didMouseDown
|
|
}
|
|
},
|
|
$.div({key: 'placeholder', className: 'line-number dummy', style: {visibility: 'hidden'}},
|
|
showLineNumbers ? '0'.repeat(maxDigits) : null,
|
|
$.div({className: 'icon-right'})
|
|
),
|
|
children
|
|
)
|
|
}
|
|
|
|
shouldUpdate (newProps) {
|
|
const oldProps = this.props
|
|
|
|
if (oldProps.showLineNumbers !== newProps.showLineNumbers) return true
|
|
if (oldProps.height !== newProps.height) return true
|
|
if (oldProps.width !== newProps.width) return true
|
|
if (oldProps.lineHeight !== newProps.lineHeight) return true
|
|
if (oldProps.startRow !== newProps.startRow) return true
|
|
if (oldProps.endRow !== newProps.endRow) return true
|
|
if (oldProps.rowsPerTile !== newProps.rowsPerTile) return true
|
|
if (oldProps.maxDigits !== newProps.maxDigits) return true
|
|
if (newProps.didMeasureVisibleBlockDecoration) return true
|
|
if (!arraysEqual(oldProps.keys, newProps.keys)) return true
|
|
if (!arraysEqual(oldProps.bufferRows, newProps.bufferRows)) return true
|
|
if (!arraysEqual(oldProps.foldableFlags, newProps.foldableFlags)) return true
|
|
if (!arraysEqual(oldProps.decorations, newProps.decorations)) return true
|
|
|
|
let oldTileStartRow = oldProps.startRow
|
|
let newTileStartRow = newProps.startRow
|
|
while (oldTileStartRow < oldProps.endRow || newTileStartRow < newProps.endRow) {
|
|
let oldTileBlockDecorations = oldProps.blockDecorations.get(oldTileStartRow)
|
|
let newTileBlockDecorations = newProps.blockDecorations.get(newTileStartRow)
|
|
|
|
if (oldTileBlockDecorations && newTileBlockDecorations) {
|
|
if (oldTileBlockDecorations.size !== newTileBlockDecorations.size) return true
|
|
|
|
let blockDecorationsChanged = false
|
|
|
|
oldTileBlockDecorations.forEach((oldDecorations, screenLineId) => {
|
|
if (!blockDecorationsChanged) {
|
|
const newDecorations = newTileBlockDecorations.get(screenLineId)
|
|
blockDecorationsChanged = (newDecorations == null || !arraysEqual(oldDecorations, newDecorations))
|
|
}
|
|
})
|
|
if (blockDecorationsChanged) return true
|
|
|
|
newTileBlockDecorations.forEach((newDecorations, screenLineId) => {
|
|
if (!blockDecorationsChanged) {
|
|
const oldDecorations = oldTileBlockDecorations.get(screenLineId)
|
|
blockDecorationsChanged = (oldDecorations == null)
|
|
}
|
|
})
|
|
if (blockDecorationsChanged) return true
|
|
} else if (oldTileBlockDecorations) {
|
|
return true
|
|
} else if (newTileBlockDecorations) {
|
|
return true
|
|
}
|
|
|
|
oldTileStartRow += oldProps.rowsPerTile
|
|
newTileStartRow += newProps.rowsPerTile
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
didMouseDown (event) {
|
|
this.props.rootComponent.didMouseDownOnLineNumberGutter(event)
|
|
}
|
|
}
|
|
|
|
class LineNumberComponent {
|
|
constructor (props) {
|
|
const {className, width, marginTop, bufferRow, screenRow, number, nodePool} = props
|
|
this.props = props
|
|
const style = {width: width + 'px'}
|
|
if (marginTop != null && marginTop > 0) style.marginTop = marginTop + 'px'
|
|
this.element = nodePool.getElement('DIV', className, style)
|
|
this.element.dataset.bufferRow = bufferRow
|
|
this.element.dataset.screenRow = screenRow
|
|
if (number) this.element.appendChild(nodePool.getTextNode(number))
|
|
this.element.appendChild(nodePool.getElement('DIV', 'icon-right', null))
|
|
}
|
|
|
|
destroy () {
|
|
this.element.remove()
|
|
this.props.nodePool.release(this.element)
|
|
}
|
|
|
|
update (props) {
|
|
const {nodePool, className, width, marginTop, bufferRow, screenRow, number} = props
|
|
|
|
if (this.props.bufferRow !== bufferRow) this.element.dataset.bufferRow = bufferRow
|
|
if (this.props.screenRow !== screenRow) this.element.dataset.screenRow = screenRow
|
|
if (this.props.className !== className) this.element.className = className
|
|
if (this.props.width !== width) this.element.style.width = width + 'px'
|
|
if (this.props.marginTop !== marginTop) {
|
|
if (marginTop != null) {
|
|
this.element.style.marginTop = marginTop + 'px'
|
|
} else {
|
|
this.element.style.marginTop = ''
|
|
}
|
|
}
|
|
if (this.props.number !== number) {
|
|
if (number) {
|
|
this.element.insertBefore(nodePool.getTextNode(number), this.element.firstChild)
|
|
} else {
|
|
const numberNode = this.element.firstChild
|
|
numberNode.remove()
|
|
nodePool.release(numberNode)
|
|
}
|
|
}
|
|
|
|
this.props = props
|
|
}
|
|
}
|
|
|
|
class CustomGutterComponent {
|
|
constructor (props) {
|
|
this.props = props
|
|
this.element = this.props.element
|
|
this.virtualNode = $.div(null)
|
|
this.virtualNode.domNode = this.element
|
|
etch.updateSync(this)
|
|
}
|
|
|
|
update (props) {
|
|
this.props = props
|
|
etch.updateSync(this)
|
|
}
|
|
|
|
destroy () {
|
|
etch.destroy(this)
|
|
}
|
|
|
|
render () {
|
|
return $.div(
|
|
{
|
|
className: 'gutter',
|
|
attributes: {'gutter-name': this.props.name},
|
|
style: {
|
|
display: this.props.visible ? '' : 'none'
|
|
}
|
|
},
|
|
$.div(
|
|
{
|
|
className: 'custom-decorations',
|
|
style: {height: this.props.height + 'px'}
|
|
},
|
|
this.renderDecorations()
|
|
)
|
|
)
|
|
}
|
|
|
|
renderDecorations () {
|
|
if (!this.props.decorations) return null
|
|
|
|
return this.props.decorations.map(({className, element, top, height}) => {
|
|
return $(CustomGutterDecorationComponent, {
|
|
className,
|
|
element,
|
|
top,
|
|
height
|
|
})
|
|
})
|
|
}
|
|
}
|
|
|
|
class CustomGutterDecorationComponent {
|
|
constructor (props) {
|
|
this.props = props
|
|
this.element = document.createElement('div')
|
|
const {top, height, className, element} = this.props
|
|
|
|
this.element.style.position = 'absolute'
|
|
this.element.style.top = top + 'px'
|
|
this.element.style.height = height + 'px'
|
|
if (className != null) this.element.className = className
|
|
if (element != null) {
|
|
this.element.appendChild(element)
|
|
element.style.height = height + 'px'
|
|
}
|
|
}
|
|
|
|
update (newProps) {
|
|
const oldProps = this.props
|
|
this.props = newProps
|
|
|
|
if (newProps.top !== oldProps.top) this.element.style.top = newProps.top + 'px'
|
|
if (newProps.height !== oldProps.height) {
|
|
this.element.style.height = newProps.height + 'px'
|
|
if (newProps.element) newProps.element.style.height = newProps.height + 'px'
|
|
}
|
|
if (newProps.className !== oldProps.className) this.element.className = newProps.className || ''
|
|
if (newProps.element !== oldProps.element) {
|
|
if (this.element.firstChild) this.element.firstChild.remove()
|
|
if (newProps.element != null) {
|
|
this.element.appendChild(newProps.element)
|
|
newProps.element.style.height = newProps.height + 'px'
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
class CursorsAndInputComponent {
|
|
constructor (props) {
|
|
this.props = props
|
|
etch.initialize(this)
|
|
}
|
|
|
|
update (props) {
|
|
if (props.measuredContent) {
|
|
this.props = props
|
|
etch.updateSync(this)
|
|
}
|
|
}
|
|
|
|
updateCursorBlinkSync (cursorsBlinkedOff) {
|
|
this.props.cursorsBlinkedOff = cursorsBlinkedOff
|
|
const className = this.getCursorsClassName()
|
|
this.refs.cursors.className = className
|
|
this.virtualNode.props.className = className
|
|
}
|
|
|
|
render () {
|
|
const {lineHeight, decorationsToRender, scrollHeight, scrollWidth} = this.props
|
|
|
|
const className = this.getCursorsClassName()
|
|
const cursorHeight = lineHeight + 'px'
|
|
|
|
const children = [this.renderHiddenInput()]
|
|
for (let i = 0; i < decorationsToRender.cursors.length; i++) {
|
|
const {pixelLeft, pixelTop, pixelWidth, className: extraCursorClassName, style: extraCursorStyle} = decorationsToRender.cursors[i]
|
|
let cursorClassName = 'cursor'
|
|
if (extraCursorClassName) cursorClassName += ' ' + extraCursorClassName
|
|
|
|
const cursorStyle = {
|
|
height: cursorHeight,
|
|
width: Math.min(pixelWidth, scrollWidth - pixelLeft) + 'px',
|
|
transform: `translate(${pixelLeft}px, ${pixelTop}px)`
|
|
}
|
|
if (extraCursorStyle) Object.assign(cursorStyle, extraCursorStyle)
|
|
|
|
children.push($.div({
|
|
className: cursorClassName,
|
|
style: cursorStyle
|
|
}))
|
|
}
|
|
|
|
return $.div({
|
|
key: 'cursors',
|
|
ref: 'cursors',
|
|
className,
|
|
style: {
|
|
position: 'absolute',
|
|
contain: 'strict',
|
|
zIndex: 1,
|
|
width: scrollWidth + 'px',
|
|
height: scrollHeight + 'px',
|
|
pointerEvents: 'none',
|
|
userSelect: 'none'
|
|
}
|
|
}, children)
|
|
}
|
|
|
|
getCursorsClassName () {
|
|
return this.props.cursorsBlinkedOff ? 'cursors blink-off' : 'cursors'
|
|
}
|
|
|
|
renderHiddenInput () {
|
|
const {
|
|
lineHeight, hiddenInputPosition, didBlurHiddenInput, didFocusHiddenInput,
|
|
didPaste, didTextInput, didKeydown, didKeyup, didKeypress,
|
|
didCompositionStart, didCompositionUpdate, didCompositionEnd, tabIndex
|
|
} = this.props
|
|
|
|
let top, left
|
|
if (hiddenInputPosition) {
|
|
top = hiddenInputPosition.pixelTop
|
|
left = hiddenInputPosition.pixelLeft
|
|
} else {
|
|
top = 0
|
|
left = 0
|
|
}
|
|
|
|
return $.input({
|
|
ref: 'hiddenInput',
|
|
key: 'hiddenInput',
|
|
className: 'hidden-input',
|
|
on: {
|
|
blur: didBlurHiddenInput,
|
|
focus: didFocusHiddenInput,
|
|
paste: didPaste,
|
|
textInput: didTextInput,
|
|
keydown: didKeydown,
|
|
keyup: didKeyup,
|
|
keypress: didKeypress,
|
|
compositionstart: didCompositionStart,
|
|
compositionupdate: didCompositionUpdate,
|
|
compositionend: didCompositionEnd
|
|
},
|
|
tabIndex: tabIndex,
|
|
style: {
|
|
position: 'absolute',
|
|
width: '1px',
|
|
height: lineHeight + 'px',
|
|
top: top + 'px',
|
|
left: left + 'px',
|
|
opacity: 0,
|
|
padding: 0,
|
|
border: 0
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
class LinesTileComponent {
|
|
constructor (props) {
|
|
this.props = props
|
|
etch.initialize(this)
|
|
this.createLines()
|
|
this.updateBlockDecorations({}, props)
|
|
}
|
|
|
|
update (newProps) {
|
|
if (this.shouldUpdate(newProps)) {
|
|
const oldProps = this.props
|
|
this.props = newProps
|
|
etch.updateSync(this)
|
|
if (!newProps.measuredContent) {
|
|
this.updateLines(oldProps, newProps)
|
|
this.updateBlockDecorations(oldProps, newProps)
|
|
}
|
|
}
|
|
}
|
|
|
|
destroy () {
|
|
for (let i = 0; i < this.lineComponents.length; i++) {
|
|
this.lineComponents[i].destroy()
|
|
}
|
|
this.lineComponents.length = 0
|
|
|
|
return etch.destroy(this)
|
|
}
|
|
|
|
render () {
|
|
const {height, width, top} = this.props
|
|
|
|
return $.div(
|
|
{
|
|
style: {
|
|
contain: 'layout style',
|
|
position: 'absolute',
|
|
height: height + 'px',
|
|
width: width + 'px',
|
|
transform: `translateY(${top}px)`
|
|
}
|
|
}
|
|
// Lines and block decorations will be manually inserted here for efficiency
|
|
)
|
|
}
|
|
|
|
createLines () {
|
|
const {
|
|
tileStartRow, screenLines, lineDecorations, textDecorations,
|
|
nodePool, displayLayer, lineComponentsByScreenLineId
|
|
} = this.props
|
|
|
|
this.lineComponents = []
|
|
for (let i = 0, length = screenLines.length; i < length; i++) {
|
|
const component = new LineComponent({
|
|
screenLine: screenLines[i],
|
|
screenRow: tileStartRow + i,
|
|
lineDecoration: lineDecorations[i],
|
|
textDecorations: textDecorations[i],
|
|
displayLayer,
|
|
nodePool,
|
|
lineComponentsByScreenLineId
|
|
})
|
|
this.element.appendChild(component.element)
|
|
this.lineComponents.push(component)
|
|
}
|
|
}
|
|
|
|
updateLines (oldProps, newProps) {
|
|
var {
|
|
screenLines, tileStartRow, lineDecorations, textDecorations,
|
|
nodePool, displayLayer, lineComponentsByScreenLineId
|
|
} = newProps
|
|
|
|
var oldScreenLines = oldProps.screenLines
|
|
var newScreenLines = screenLines
|
|
var oldScreenLinesEndIndex = oldScreenLines.length
|
|
var newScreenLinesEndIndex = newScreenLines.length
|
|
var oldScreenLineIndex = 0
|
|
var newScreenLineIndex = 0
|
|
var lineComponentIndex = 0
|
|
|
|
while (oldScreenLineIndex < oldScreenLinesEndIndex || newScreenLineIndex < newScreenLinesEndIndex) {
|
|
var oldScreenLine = oldScreenLines[oldScreenLineIndex]
|
|
var newScreenLine = newScreenLines[newScreenLineIndex]
|
|
|
|
if (oldScreenLineIndex >= oldScreenLinesEndIndex) {
|
|
var newScreenLineComponent = new LineComponent({
|
|
screenLine: newScreenLine,
|
|
screenRow: tileStartRow + newScreenLineIndex,
|
|
lineDecoration: lineDecorations[newScreenLineIndex],
|
|
textDecorations: textDecorations[newScreenLineIndex],
|
|
displayLayer,
|
|
nodePool,
|
|
lineComponentsByScreenLineId
|
|
})
|
|
this.element.appendChild(newScreenLineComponent.element)
|
|
this.lineComponents.push(newScreenLineComponent)
|
|
|
|
newScreenLineIndex++
|
|
lineComponentIndex++
|
|
} else if (newScreenLineIndex >= newScreenLinesEndIndex) {
|
|
this.lineComponents[lineComponentIndex].destroy()
|
|
this.lineComponents.splice(lineComponentIndex, 1)
|
|
|
|
oldScreenLineIndex++
|
|
} else if (oldScreenLine === newScreenLine) {
|
|
var lineComponent = this.lineComponents[lineComponentIndex]
|
|
lineComponent.update({
|
|
screenRow: tileStartRow + newScreenLineIndex,
|
|
lineDecoration: lineDecorations[newScreenLineIndex],
|
|
textDecorations: textDecorations[newScreenLineIndex]
|
|
})
|
|
|
|
oldScreenLineIndex++
|
|
newScreenLineIndex++
|
|
lineComponentIndex++
|
|
} else {
|
|
var oldScreenLineIndexInNewScreenLines = newScreenLines.indexOf(oldScreenLine)
|
|
var newScreenLineIndexInOldScreenLines = oldScreenLines.indexOf(newScreenLine)
|
|
if (newScreenLineIndex < oldScreenLineIndexInNewScreenLines && oldScreenLineIndexInNewScreenLines < newScreenLinesEndIndex) {
|
|
var newScreenLineComponents = []
|
|
while (newScreenLineIndex < oldScreenLineIndexInNewScreenLines) {
|
|
var newScreenLineComponent = new LineComponent({ // eslint-disable-line no-redeclare
|
|
screenLine: newScreenLines[newScreenLineIndex],
|
|
screenRow: tileStartRow + newScreenLineIndex,
|
|
lineDecoration: lineDecorations[newScreenLineIndex],
|
|
textDecorations: textDecorations[newScreenLineIndex],
|
|
displayLayer,
|
|
nodePool,
|
|
lineComponentsByScreenLineId
|
|
})
|
|
this.element.insertBefore(newScreenLineComponent.element, this.getFirstElementForScreenLine(oldProps, oldScreenLine))
|
|
newScreenLineComponents.push(newScreenLineComponent)
|
|
|
|
newScreenLineIndex++
|
|
}
|
|
|
|
this.lineComponents.splice(lineComponentIndex, 0, ...newScreenLineComponents)
|
|
lineComponentIndex = lineComponentIndex + newScreenLineComponents.length
|
|
} else if (oldScreenLineIndex < newScreenLineIndexInOldScreenLines && newScreenLineIndexInOldScreenLines < oldScreenLinesEndIndex) {
|
|
while (oldScreenLineIndex < newScreenLineIndexInOldScreenLines) {
|
|
this.lineComponents[lineComponentIndex].destroy()
|
|
this.lineComponents.splice(lineComponentIndex, 1)
|
|
|
|
oldScreenLineIndex++
|
|
}
|
|
} else {
|
|
var oldScreenLineComponent = this.lineComponents[lineComponentIndex]
|
|
var newScreenLineComponent = new LineComponent({ // eslint-disable-line no-redeclare
|
|
screenLine: newScreenLines[newScreenLineIndex],
|
|
screenRow: tileStartRow + newScreenLineIndex,
|
|
lineDecoration: lineDecorations[newScreenLineIndex],
|
|
textDecorations: textDecorations[newScreenLineIndex],
|
|
displayLayer,
|
|
nodePool,
|
|
lineComponentsByScreenLineId
|
|
})
|
|
this.element.insertBefore(newScreenLineComponent.element, oldScreenLineComponent.element)
|
|
oldScreenLineComponent.destroy()
|
|
this.lineComponents[lineComponentIndex] = newScreenLineComponent
|
|
|
|
oldScreenLineIndex++
|
|
newScreenLineIndex++
|
|
lineComponentIndex++
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
getFirstElementForScreenLine (oldProps, screenLine) {
|
|
var blockDecorations = oldProps.blockDecorations ? oldProps.blockDecorations.get(screenLine.id) : null
|
|
if (blockDecorations) {
|
|
var blockDecorationElementsBeforeOldScreenLine = []
|
|
for (let i = 0; i < blockDecorations.length; i++) {
|
|
var decoration = blockDecorations[i]
|
|
if (decoration.position !== 'after') {
|
|
blockDecorationElementsBeforeOldScreenLine.push(
|
|
TextEditor.viewForItem(decoration.item)
|
|
)
|
|
}
|
|
}
|
|
|
|
for (let i = 0; i < blockDecorationElementsBeforeOldScreenLine.length; i++) {
|
|
var blockDecorationElement = blockDecorationElementsBeforeOldScreenLine[i]
|
|
if (!blockDecorationElementsBeforeOldScreenLine.includes(blockDecorationElement.previousSibling)) {
|
|
return blockDecorationElement
|
|
}
|
|
}
|
|
}
|
|
|
|
return oldProps.lineComponentsByScreenLineId.get(screenLine.id).element
|
|
}
|
|
|
|
updateBlockDecorations (oldProps, newProps) {
|
|
var {blockDecorations, lineComponentsByScreenLineId} = newProps
|
|
|
|
if (oldProps.blockDecorations) {
|
|
oldProps.blockDecorations.forEach((oldDecorations, screenLineId) => {
|
|
var newDecorations = newProps.blockDecorations ? newProps.blockDecorations.get(screenLineId) : null
|
|
for (var i = 0; i < oldDecorations.length; i++) {
|
|
var oldDecoration = oldDecorations[i]
|
|
if (newDecorations && newDecorations.includes(oldDecoration)) continue
|
|
|
|
var element = TextEditor.viewForItem(oldDecoration.item)
|
|
if (element.parentElement !== this.element) continue
|
|
|
|
element.remove()
|
|
}
|
|
})
|
|
}
|
|
|
|
if (blockDecorations) {
|
|
blockDecorations.forEach((newDecorations, screenLineId) => {
|
|
var oldDecorations = oldProps.blockDecorations ? oldProps.blockDecorations.get(screenLineId) : null
|
|
for (var i = 0; i < newDecorations.length; i++) {
|
|
var newDecoration = newDecorations[i]
|
|
if (oldDecorations && oldDecorations.includes(newDecoration)) continue
|
|
|
|
var element = TextEditor.viewForItem(newDecoration.item)
|
|
var lineNode = lineComponentsByScreenLineId.get(screenLineId).element
|
|
if (newDecoration.position === 'after') {
|
|
this.element.insertBefore(element, lineNode.nextSibling)
|
|
} else {
|
|
this.element.insertBefore(element, lineNode)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
shouldUpdate (newProps) {
|
|
const oldProps = this.props
|
|
if (oldProps.top !== newProps.top) return true
|
|
if (oldProps.height !== newProps.height) return true
|
|
if (oldProps.width !== newProps.width) return true
|
|
if (oldProps.lineHeight !== newProps.lineHeight) return true
|
|
if (oldProps.tileStartRow !== newProps.tileStartRow) return true
|
|
if (oldProps.tileEndRow !== newProps.tileEndRow) return true
|
|
if (!arraysEqual(oldProps.screenLines, newProps.screenLines)) return true
|
|
if (!arraysEqual(oldProps.lineDecorations, newProps.lineDecorations)) return true
|
|
|
|
if (oldProps.blockDecorations && newProps.blockDecorations) {
|
|
if (oldProps.blockDecorations.size !== newProps.blockDecorations.size) return true
|
|
|
|
let blockDecorationsChanged = false
|
|
|
|
oldProps.blockDecorations.forEach((oldDecorations, screenLineId) => {
|
|
if (!blockDecorationsChanged) {
|
|
const newDecorations = newProps.blockDecorations.get(screenLineId)
|
|
blockDecorationsChanged = (newDecorations == null || !arraysEqual(oldDecorations, newDecorations))
|
|
}
|
|
})
|
|
if (blockDecorationsChanged) return true
|
|
|
|
newProps.blockDecorations.forEach((newDecorations, screenLineId) => {
|
|
if (!blockDecorationsChanged) {
|
|
const oldDecorations = oldProps.blockDecorations.get(screenLineId)
|
|
blockDecorationsChanged = (oldDecorations == null)
|
|
}
|
|
})
|
|
if (blockDecorationsChanged) return true
|
|
} else if (oldProps.blockDecorations) {
|
|
return true
|
|
} else if (newProps.blockDecorations) {
|
|
return true
|
|
}
|
|
|
|
if (oldProps.textDecorations.length !== newProps.textDecorations.length) return true
|
|
for (let i = 0; i < oldProps.textDecorations.length; i++) {
|
|
if (!textDecorationsEqual(oldProps.textDecorations[i], newProps.textDecorations[i])) return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
}
|
|
|
|
class LineComponent {
|
|
constructor (props) {
|
|
const {nodePool, screenRow, screenLine, lineComponentsByScreenLineId, offScreen} = props
|
|
this.props = props
|
|
this.element = nodePool.getElement('DIV', this.buildClassName(), null)
|
|
this.element.dataset.screenRow = screenRow
|
|
this.textNodes = []
|
|
|
|
if (offScreen) {
|
|
this.element.style.position = 'absolute'
|
|
this.element.style.visibility = 'hidden'
|
|
this.element.dataset.offScreen = true
|
|
}
|
|
|
|
this.appendContents()
|
|
lineComponentsByScreenLineId.set(screenLine.id, this)
|
|
}
|
|
|
|
update (newProps) {
|
|
if (this.props.lineDecoration !== newProps.lineDecoration) {
|
|
this.props.lineDecoration = newProps.lineDecoration
|
|
this.element.className = this.buildClassName()
|
|
}
|
|
|
|
if (this.props.screenRow !== newProps.screenRow) {
|
|
this.props.screenRow = newProps.screenRow
|
|
this.element.dataset.screenRow = newProps.screenRow
|
|
}
|
|
|
|
if (!textDecorationsEqual(this.props.textDecorations, newProps.textDecorations)) {
|
|
this.props.textDecorations = newProps.textDecorations
|
|
this.element.firstChild.remove()
|
|
this.appendContents()
|
|
}
|
|
}
|
|
|
|
destroy () {
|
|
const {nodePool, lineComponentsByScreenLineId, screenLine} = this.props
|
|
|
|
if (lineComponentsByScreenLineId.get(screenLine.id) === this) {
|
|
lineComponentsByScreenLineId.delete(screenLine.id)
|
|
}
|
|
|
|
this.element.remove()
|
|
nodePool.release(this.element)
|
|
}
|
|
|
|
appendContents () {
|
|
const {displayLayer, nodePool, screenLine, textDecorations} = this.props
|
|
|
|
this.textNodes.length = 0
|
|
|
|
const {lineText, tags} = screenLine
|
|
let openScopeNode = nodePool.getElement('SPAN', null, null)
|
|
this.element.appendChild(openScopeNode)
|
|
|
|
let decorationIndex = 0
|
|
let column = 0
|
|
let activeClassName = null
|
|
let activeStyle = null
|
|
let nextDecoration = textDecorations ? textDecorations[decorationIndex] : null
|
|
if (nextDecoration && nextDecoration.column === 0) {
|
|
column = nextDecoration.column
|
|
activeClassName = nextDecoration.className
|
|
activeStyle = nextDecoration.style
|
|
nextDecoration = textDecorations[++decorationIndex]
|
|
}
|
|
|
|
for (let i = 0; i < tags.length; i++) {
|
|
const tag = tags[i]
|
|
if (tag !== 0) {
|
|
if (displayLayer.isCloseTag(tag)) {
|
|
openScopeNode = openScopeNode.parentElement
|
|
} else if (displayLayer.isOpenTag(tag)) {
|
|
const newScopeNode = nodePool.getElement('SPAN', displayLayer.classNameForTag(tag), null)
|
|
openScopeNode.appendChild(newScopeNode)
|
|
openScopeNode = newScopeNode
|
|
} else {
|
|
const nextTokenColumn = column + tag
|
|
while (nextDecoration && nextDecoration.column <= nextTokenColumn) {
|
|
const text = lineText.substring(column, nextDecoration.column)
|
|
this.appendTextNode(openScopeNode, text, activeClassName, activeStyle)
|
|
column = nextDecoration.column
|
|
activeClassName = nextDecoration.className
|
|
activeStyle = nextDecoration.style
|
|
nextDecoration = textDecorations[++decorationIndex]
|
|
}
|
|
|
|
if (column < nextTokenColumn) {
|
|
const text = lineText.substring(column, nextTokenColumn)
|
|
this.appendTextNode(openScopeNode, text, activeClassName, activeStyle)
|
|
column = nextTokenColumn
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (column === 0) {
|
|
const textNode = nodePool.getTextNode(' ')
|
|
this.element.appendChild(textNode)
|
|
this.textNodes.push(textNode)
|
|
}
|
|
|
|
if (lineText.endsWith(displayLayer.foldCharacter)) {
|
|
// Insert a zero-width non-breaking whitespace, so that LinesYardstick can
|
|
// take the fold-marker::after pseudo-element into account during
|
|
// measurements when such marker is the last character on the line.
|
|
const textNode = nodePool.getTextNode(ZERO_WIDTH_NBSP_CHARACTER)
|
|
this.element.appendChild(textNode)
|
|
this.textNodes.push(textNode)
|
|
}
|
|
}
|
|
|
|
appendTextNode (openScopeNode, text, activeClassName, activeStyle) {
|
|
const {nodePool} = this.props
|
|
|
|
if (activeClassName || activeStyle) {
|
|
const decorationNode = nodePool.getElement('SPAN', activeClassName, activeStyle)
|
|
openScopeNode.appendChild(decorationNode)
|
|
openScopeNode = decorationNode
|
|
}
|
|
|
|
const textNode = nodePool.getTextNode(text)
|
|
openScopeNode.appendChild(textNode)
|
|
this.textNodes.push(textNode)
|
|
}
|
|
|
|
buildClassName () {
|
|
const {lineDecoration} = this.props
|
|
let className = 'line'
|
|
if (lineDecoration != null) className = className + ' ' + lineDecoration
|
|
return className
|
|
}
|
|
}
|
|
|
|
class HighlightsComponent {
|
|
constructor (props) {
|
|
this.props = {}
|
|
this.element = document.createElement('div')
|
|
this.element.className = 'highlights'
|
|
this.element.style.contain = 'strict'
|
|
this.element.style.position = 'absolute'
|
|
this.element.style.overflow = 'hidden'
|
|
this.element.style.userSelect = 'none'
|
|
this.highlightComponentsByKey = new Map()
|
|
this.update(props)
|
|
}
|
|
|
|
destroy () {
|
|
this.highlightComponentsByKey.forEach((highlightComponent) => {
|
|
highlightComponent.destroy()
|
|
})
|
|
this.highlightComponentsByKey.clear()
|
|
}
|
|
|
|
update (newProps) {
|
|
if (this.shouldUpdate(newProps)) {
|
|
this.props = newProps
|
|
const {height, width, lineHeight, highlightDecorations} = this.props
|
|
|
|
this.element.style.height = height + 'px'
|
|
this.element.style.width = width + 'px'
|
|
|
|
const visibleHighlightDecorations = new Set()
|
|
if (highlightDecorations) {
|
|
for (let i = 0; i < highlightDecorations.length; i++) {
|
|
const highlightDecoration = highlightDecorations[i]
|
|
const highlightProps = Object.assign({lineHeight}, highlightDecorations[i])
|
|
|
|
let highlightComponent = this.highlightComponentsByKey.get(highlightDecoration.key)
|
|
if (highlightComponent) {
|
|
highlightComponent.update(highlightProps)
|
|
} else {
|
|
highlightComponent = new HighlightComponent(highlightProps)
|
|
this.element.appendChild(highlightComponent.element)
|
|
this.highlightComponentsByKey.set(highlightDecoration.key, highlightComponent)
|
|
}
|
|
|
|
highlightDecorations[i].flashRequested = false
|
|
visibleHighlightDecorations.add(highlightDecoration.key)
|
|
}
|
|
}
|
|
|
|
this.highlightComponentsByKey.forEach((highlightComponent, key) => {
|
|
if (!visibleHighlightDecorations.has(key)) {
|
|
highlightComponent.destroy()
|
|
this.highlightComponentsByKey.delete(key)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
shouldUpdate (newProps) {
|
|
const oldProps = this.props
|
|
|
|
if (!newProps.hasInitialMeasurements) return false
|
|
|
|
if (oldProps.width !== newProps.width) return true
|
|
if (oldProps.height !== newProps.height) return true
|
|
if (oldProps.lineHeight !== newProps.lineHeight) return true
|
|
if (!oldProps.highlightDecorations && newProps.highlightDecorations) return true
|
|
if (oldProps.highlightDecorations && !newProps.highlightDecorations) return true
|
|
if (oldProps.highlightDecorations && newProps.highlightDecorations) {
|
|
if (oldProps.highlightDecorations.length !== newProps.highlightDecorations.length) return true
|
|
|
|
for (let i = 0, length = oldProps.highlightDecorations.length; i < length; i++) {
|
|
const oldHighlight = oldProps.highlightDecorations[i]
|
|
const newHighlight = newProps.highlightDecorations[i]
|
|
if (oldHighlight.className !== newHighlight.className) return true
|
|
if (newHighlight.flashRequested) return true
|
|
if (oldHighlight.startPixelTop !== newHighlight.startPixelTop) return true
|
|
if (oldHighlight.startPixelLeft !== newHighlight.startPixelLeft) return true
|
|
if (oldHighlight.endPixelTop !== newHighlight.endPixelTop) return true
|
|
if (oldHighlight.endPixelLeft !== newHighlight.endPixelLeft) return true
|
|
if (!oldHighlight.screenRange.isEqual(newHighlight.screenRange)) return true
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
class HighlightComponent {
|
|
constructor (props) {
|
|
this.props = props
|
|
etch.initialize(this)
|
|
if (this.props.flashRequested) this.performFlash()
|
|
}
|
|
|
|
destroy () {
|
|
if (this.timeoutsByClassName) {
|
|
this.timeoutsByClassName.forEach((timeout) => {
|
|
window.clearTimeout(timeout)
|
|
})
|
|
this.timeoutsByClassName.clear()
|
|
}
|
|
|
|
return etch.destroy(this)
|
|
}
|
|
|
|
update (newProps) {
|
|
this.props = newProps
|
|
etch.updateSync(this)
|
|
if (newProps.flashRequested) this.performFlash()
|
|
}
|
|
|
|
performFlash () {
|
|
const {flashClass, flashDuration} = this.props
|
|
if (!this.timeoutsByClassName) this.timeoutsByClassName = new Map()
|
|
|
|
// If a flash of this class is already in progress, clear it early and
|
|
// flash again on the next frame to ensure CSS transitions apply to the
|
|
// second flash.
|
|
if (this.timeoutsByClassName.has(flashClass)) {
|
|
window.clearTimeout(this.timeoutsByClassName.get(flashClass))
|
|
this.timeoutsByClassName.delete(flashClass)
|
|
this.element.classList.remove(flashClass)
|
|
requestAnimationFrame(() => this.performFlash())
|
|
} else {
|
|
this.element.classList.add(flashClass)
|
|
this.timeoutsByClassName.set(flashClass, window.setTimeout(() => {
|
|
this.element.classList.remove(flashClass)
|
|
}, flashDuration))
|
|
}
|
|
}
|
|
|
|
render () {
|
|
const {
|
|
className, screenRange, lineHeight,
|
|
startPixelTop, startPixelLeft, endPixelTop, endPixelLeft
|
|
} = this.props
|
|
const regionClassName = 'region ' + className
|
|
|
|
let children
|
|
if (screenRange.start.row === screenRange.end.row) {
|
|
children = $.div({
|
|
className: regionClassName,
|
|
style: {
|
|
position: 'absolute',
|
|
boxSizing: 'border-box',
|
|
top: startPixelTop + 'px',
|
|
left: startPixelLeft + 'px',
|
|
width: endPixelLeft - startPixelLeft + 'px',
|
|
height: lineHeight + 'px'
|
|
}
|
|
})
|
|
} else {
|
|
children = []
|
|
children.push($.div({
|
|
className: regionClassName,
|
|
style: {
|
|
position: 'absolute',
|
|
boxSizing: 'border-box',
|
|
top: startPixelTop + 'px',
|
|
left: startPixelLeft + 'px',
|
|
right: 0,
|
|
height: lineHeight + 'px'
|
|
}
|
|
}))
|
|
|
|
if (screenRange.end.row - screenRange.start.row > 1) {
|
|
children.push($.div({
|
|
className: regionClassName,
|
|
style: {
|
|
position: 'absolute',
|
|
boxSizing: 'border-box',
|
|
top: startPixelTop + lineHeight + 'px',
|
|
left: 0,
|
|
right: 0,
|
|
height: endPixelTop - startPixelTop - (lineHeight * 2) + 'px'
|
|
}
|
|
}))
|
|
}
|
|
|
|
if (endPixelLeft > 0) {
|
|
children.push($.div({
|
|
className: regionClassName,
|
|
style: {
|
|
position: 'absolute',
|
|
boxSizing: 'border-box',
|
|
top: endPixelTop - lineHeight + 'px',
|
|
left: 0,
|
|
width: endPixelLeft + 'px',
|
|
height: lineHeight + 'px'
|
|
}
|
|
}))
|
|
}
|
|
}
|
|
|
|
return $.div({className: 'highlight ' + className}, children)
|
|
}
|
|
}
|
|
|
|
class OverlayComponent {
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constructor (props) {
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this.props = props
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this.element = document.createElement('atom-overlay')
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if (this.props.className != null) this.element.classList.add(this.props.className)
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this.element.appendChild(this.props.element)
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this.element.style.position = 'fixed'
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this.element.style.zIndex = 4
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this.element.style.top = (this.props.pixelTop || 0) + 'px'
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this.element.style.left = (this.props.pixelLeft || 0) + 'px'
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this.currentContentRect = null
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// Synchronous DOM updates in response to resize events might trigger a
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// "loop limit exceeded" error. We disconnect the observer before
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// potentially mutating the DOM, and then reconnect it on the next tick.
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// Note: ResizeObserver calls its callback when .observe is called
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this.resizeObserver = new ResizeObserver((entries) => {
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const {contentRect} = entries[0]
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if (
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this.currentContentRect &&
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(this.currentContentRect.width !== contentRect.width ||
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this.currentContentRect.height !== contentRect.height)
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) {
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this.resizeObserver.disconnect()
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this.props.didResize(this)
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process.nextTick(() => { this.resizeObserver.observe(this.props.element) })
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}
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this.currentContentRect = contentRect
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})
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this.didAttach()
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this.props.overlayComponents.add(this)
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}
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destroy () {
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this.props.overlayComponents.delete(this)
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this.didDetach()
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}
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getNextUpdatePromise () {
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if (!this.nextUpdatePromise) {
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this.nextUpdatePromise = new Promise((resolve) => {
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this.resolveNextUpdatePromise = () => {
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this.nextUpdatePromise = null
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this.resolveNextUpdatePromise = null
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resolve()
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}
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})
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}
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return this.nextUpdatePromise
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}
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update (newProps) {
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const oldProps = this.props
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this.props = Object.assign({}, oldProps, newProps)
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if (this.props.pixelTop != null) this.element.style.top = this.props.pixelTop + 'px'
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if (this.props.pixelLeft != null) this.element.style.left = this.props.pixelLeft + 'px'
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if (newProps.className !== oldProps.className) {
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if (oldProps.className != null) this.element.classList.remove(oldProps.className)
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if (newProps.className != null) this.element.classList.add(newProps.className)
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}
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if (this.resolveNextUpdatePromise) this.resolveNextUpdatePromise()
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}
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didAttach () {
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this.resizeObserver.observe(this.props.element)
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}
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didDetach () {
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this.resizeObserver.disconnect()
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}
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}
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let rangeForMeasurement
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function clientRectForRange (textNode, startIndex, endIndex) {
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if (!rangeForMeasurement) rangeForMeasurement = document.createRange()
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rangeForMeasurement.setStart(textNode, startIndex)
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rangeForMeasurement.setEnd(textNode, endIndex)
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return rangeForMeasurement.getBoundingClientRect()
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}
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function textDecorationsEqual (oldDecorations, newDecorations) {
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if (!oldDecorations && newDecorations) return false
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if (oldDecorations && !newDecorations) return false
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if (oldDecorations && newDecorations) {
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if (oldDecorations.length !== newDecorations.length) return false
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for (let j = 0; j < oldDecorations.length; j++) {
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if (oldDecorations[j].column !== newDecorations[j].column) return false
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if (oldDecorations[j].className !== newDecorations[j].className) return false
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if (!objectsEqual(oldDecorations[j].style, newDecorations[j].style)) return false
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}
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}
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return true
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}
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function arraysEqual (a, b) {
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if (a.length !== b.length) return false
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for (let i = 0, length = a.length; i < length; i++) {
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if (a[i] !== b[i]) return false
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}
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return true
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}
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function objectsEqual (a, b) {
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if (!a && b) return false
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if (a && !b) return false
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if (a && b) {
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for (const key in a) {
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if (a[key] !== b[key]) return false
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}
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for (const key in b) {
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if (a[key] !== b[key]) return false
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}
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}
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return true
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}
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function constrainRangeToRows (range, startRow, endRow) {
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if (range.start.row < startRow || range.end.row >= endRow) {
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range = range.copy()
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if (range.start.row < startRow) {
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range.start.row = startRow
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range.start.column = 0
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}
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if (range.end.row >= endRow) {
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range.end.row = endRow
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range.end.column = 0
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}
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}
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return range
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}
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function debounce (fn, wait) {
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let timestamp, timeout
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function later () {
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const last = Date.now() - timestamp
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if (last < wait && last >= 0) {
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timeout = setTimeout(later, wait - last)
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} else {
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timeout = null
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fn()
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}
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}
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return function () {
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timestamp = Date.now()
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if (!timeout) timeout = setTimeout(later, wait)
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}
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}
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class NodePool {
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constructor () {
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this.elementsByType = {}
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this.textNodes = []
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}
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getElement (type, className, style) {
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var element
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var elementsByDepth = this.elementsByType[type]
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if (elementsByDepth) {
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while (elementsByDepth.length > 0) {
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var elements = elementsByDepth[elementsByDepth.length - 1]
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if (elements && elements.length > 0) {
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element = elements.pop()
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if (elements.length === 0) elementsByDepth.pop()
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break
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} else {
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elementsByDepth.pop()
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}
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}
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}
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if (element) {
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element.className = className || ''
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element.styleMap.forEach((value, key) => {
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if (!style || style[key] == null) element.style[key] = ''
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})
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if (style) Object.assign(element.style, style)
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for (const key in element.dataset) delete element.dataset[key]
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while (element.firstChild) element.firstChild.remove()
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return element
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} else {
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var newElement = document.createElement(type)
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if (className) newElement.className = className
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if (style) Object.assign(newElement.style, style)
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return newElement
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}
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}
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getTextNode (text) {
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if (this.textNodes.length > 0) {
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var node = this.textNodes.pop()
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node.textContent = text
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return node
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} else {
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return document.createTextNode(text)
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}
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}
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release (node, depth = 0) {
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var {nodeName} = node
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if (nodeName === '#text') {
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this.textNodes.push(node)
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} else {
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var elementsByDepth = this.elementsByType[nodeName]
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if (!elementsByDepth) {
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elementsByDepth = []
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this.elementsByType[nodeName] = elementsByDepth
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}
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var elements = elementsByDepth[depth]
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if (!elements) {
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elements = []
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elementsByDepth[depth] = elements
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}
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elements.push(node)
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for (var i = 0; i < node.childNodes.length; i++) {
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this.release(node.childNodes[i], depth + 1)
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}
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}
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}
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}
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function roundToPhysicalPixelBoundary (virtualPixelPosition) {
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const virtualPixelsPerPhysicalPixel = (1 / window.devicePixelRatio)
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return Math.round(virtualPixelPosition / virtualPixelsPerPhysicalPixel) * virtualPixelsPerPhysicalPixel
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}
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function ceilToPhysicalPixelBoundary (virtualPixelPosition) {
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const virtualPixelsPerPhysicalPixel = (1 / window.devicePixelRatio)
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return Math.ceil(virtualPixelPosition / virtualPixelsPerPhysicalPixel) * virtualPixelsPerPhysicalPixel
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}
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